ASTM F1203-22
(Specification)Standard Specification for Washing Machines-Pot, Pan, and Utensil, Heat Sanitizing, Commercial Rotary Conveyor Type
Standard Specification for Washing Machines-Pot, Pan, and Utensil, Heat Sanitizing, Commercial Rotary Conveyor Type
ABSTRACT
This specification covers manually fed, motor-driven rotary conveyor type, automatically controlled, commercial pot, pan, and utensil washing machines. The washer shall be of the following type, and class as specified. Motor-driven continuous rotary conveyor: type I - one door (front loading); type II - one or two door (pass-through corner operation); and type III - one or two door (pass-through straight line operation). Style and class: style 1 - steam heated; style 2 - electric heat; class A - injection; and class B - heat exchange coil. The design, construction, and performance requirements of the washing machine are presented in details. The operational test; leakage test; and energy and productivity test shall be performed to meet the requirements prescribed.
SCOPE
1.1 This specification covers manually fed, motor-driven rotary conveyor type, automatically controlled, commercial pot, pan, and utensil washing machines, hereinafter referred to as “the washer.”
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.3 The following precautionary statement pertains only to the test methods portion, Section 9, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
General Information
Relations
Frequently Asked Questions
ASTM F1203-22 is a technical specification published by ASTM International. Its full title is "Standard Specification for Washing Machines-Pot, Pan, and Utensil, Heat Sanitizing, Commercial Rotary Conveyor Type". This standard covers: ABSTRACT This specification covers manually fed, motor-driven rotary conveyor type, automatically controlled, commercial pot, pan, and utensil washing machines. The washer shall be of the following type, and class as specified. Motor-driven continuous rotary conveyor: type I - one door (front loading); type II - one or two door (pass-through corner operation); and type III - one or two door (pass-through straight line operation). Style and class: style 1 - steam heated; style 2 - electric heat; class A - injection; and class B - heat exchange coil. The design, construction, and performance requirements of the washing machine are presented in details. The operational test; leakage test; and energy and productivity test shall be performed to meet the requirements prescribed. SCOPE 1.1 This specification covers manually fed, motor-driven rotary conveyor type, automatically controlled, commercial pot, pan, and utensil washing machines, hereinafter referred to as “the washer.” 1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.3 The following precautionary statement pertains only to the test methods portion, Section 9, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ABSTRACT This specification covers manually fed, motor-driven rotary conveyor type, automatically controlled, commercial pot, pan, and utensil washing machines. The washer shall be of the following type, and class as specified. Motor-driven continuous rotary conveyor: type I - one door (front loading); type II - one or two door (pass-through corner operation); and type III - one or two door (pass-through straight line operation). Style and class: style 1 - steam heated; style 2 - electric heat; class A - injection; and class B - heat exchange coil. The design, construction, and performance requirements of the washing machine are presented in details. The operational test; leakage test; and energy and productivity test shall be performed to meet the requirements prescribed. SCOPE 1.1 This specification covers manually fed, motor-driven rotary conveyor type, automatically controlled, commercial pot, pan, and utensil washing machines, hereinafter referred to as “the washer.” 1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.3 The following precautionary statement pertains only to the test methods portion, Section 9, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ASTM F1203-22 is classified under the following ICS (International Classification for Standards) categories: 97.040.40 - Dishwashers. The ICS classification helps identify the subject area and facilitates finding related standards.
ASTM F1203-22 has the following relationships with other standards: It is inter standard links to ASTM A53/A53M-24, ASTM A240/A240M-23a, ASTM D3951-18(2023), ASTM A436-84(2020), ASTM B43-20, ASTM B127-19, ASTM F1021-18, ASTM D3951-18, ASTM A240/A240M-17, ASTM F760-93(2017), ASTM A240/A240M-16a, ASTM A240/A240M-16, ASTM D3951-15, ASTM A240/A240M-15b, ASTM B43-15. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
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Standards Content (Sample)
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:F1203 −22 An American National Standard
Standard Specification for
Washing Machines—Pot, Pan, and Utensil, Heat Sanitizing,
Commercial Rotary Conveyor Type
This standard is issued under the fixed designation F1203; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope B43 Specification for Seamless Red Brass Pipe, Standard
Sizes
1.1 This specification covers manually fed, motor-driven
B75 Specification for Seamless Copper Tube (Metric)
rotary conveyor type, automatically controlled, commercial
B0075_B0075M
pot, pan, and utensil washing machines, hereinafter referred to
B127 Specification for Nickel-Copper Alloy Plate, Sheet,
as “the washer.”
and Strip
1.2 The values stated in inch-pound units are to be regarded
D3951 Practice for Commercial Packaging
as standard. The values given in parentheses are mathematical
F760 Specification for Food Service Equipment Manuals
conversions to SI units that are provided for information only
F1021 Specification for Feeders, Detergent, Rinse Agent,
and are not considered standard.
and Sanitizing Agent for Commercial Dishwashing and
1.3 The following precautionary statement pertains only to
Glasswashing Machines
the test methods portion, Section 9, of this specification: This F1696 Test Method for Energy Performance of Stationary-
standard does not purport to address all of the safety concerns,
Rack, Door-Type Commercial Dishwashing Machines
if any, associated with its use. It is the responsibility of the user 3
2.2 American National Standards:
of this standard to establish appropriate safety, health, and
ANSI SI.4 Specification for Sound Level Meters
environmental practices and determine the applicability of
ANSI SI.13 Methods for the Measurement of Sound Pres-
regulatory limitations prior to use.
sure Levels
1.4 This international standard was developed in accor-
2.3 Federal Regulations:
dance with internationally recognized principles on standard-
OSHA Title 29
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom- 2.4 National Electrical Manufacturers Association Stan-
mendations issued by the World Trade Organization Technical
dards:
Barriers to Trade (TBT) Committee. NEMA ICS Industrial Controls and Systems
NEMA MG-I Motors and Generators
2. Referenced Documents
2.5 National Fire Protection Association Standard:
2.1 ASTM Standards:
NFPA/ANSI 70 National Electrical Code
A53/A53M Specification for Pipe, Steel, Black and Hot-
2.6 NSF International Standards:
Dipped, Zinc-Coated, Welded and Seamless
NSF/ANSI 3 Commercial Warewashing Equipment
A240/A240M Specification for Chromium and Chromium-
NSF/ANSI 5 Commercial Hot Water Generating Equipment
Nickel Stainless Steel Plate, Sheet, and Strip for Pressure
NSF/ANSI 29 Detergent/Chemical Feeders for Commercial
Vessels and for General Applications
Spray-Type Dishwashing Machines
A436 Specification for Austenitic Gray Iron Castings
NSF Listings–Food Equipment
A554 Specification for Welded Stainless Steel Mechanical
Tubing
1 3
This specification is under the jurisdiction of ASTM Committee F26 on Food Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
Service Equipment and is the direct responsibility of Subcommittee F26.01 on 4th Floor, New York, NY 10036.
Cleaning and Sanitation Equipment. Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,
Current edition approved April 1, 2022. Published April 2022. Originally Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098.
approved in 1988. Last previous edition approved in 2016 as F1203 – 16. DOI: Available from National Electrical Manufacturers Association (NEMA), 1300
10.1520/F1203-22. N. 17th St., Suite 1847, Rosslyn, VA 22209.
2 6
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Available from National Fire Protection Association (NFPA), 1 Batterymarch
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Park, Quincy, MA 02269-9101.
Standards volume information, refer to the standard’s Document Summary page on Available from NSF International, P.O. Box 130140, 789 N. Dixboro Rd.,Ann
the ASTM website. Arbor, MI 48113-0140.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F1203−22
2.7 Underwriters Laboratories Standard: 5.1.8 When energy consumption profiles, water consump-
UL 921 Commercial Dishwashers tion profiles, or productivity profiles are desired (see 9.3).
5.1.9 Manufacturer’s certification, when required (see Sec-
3. Terminology tion 10).
3.1 Definitions:
6. Materials
3.1.1 commercial pot, pan, and utensil washing machines—
6.1 All materials shall be specified as follows:
machines that uniformly wash, rinse and heat sanitize food
6.1.1 Materials used shall be free from defects that would
preparation utensils. The machines shall be capable of remov-
adversely affect the performance or maintainability of indi-
ing physical soil and sanitizing properly racked and pre-
vidual components of the overall assembly. The pot, pan, and
scraped multiple pots, pans, and utensils. The machines shall
utensil washing machines shall meet the material, design, and
consist of the following principal parts: legs, wash chamber,
construction requirements of NSF/ANSI 3.
hood, tank, doors, spray assemblies, pumps, motors, controls,
6.1.2 Corrosion-Resistant Steel—Corrosion-resistant steel
piping, valves, heating equipment and accessories.
shall conform to the requirements of any 300 series stainless
steel specified in 2.1 (see Specification A240/A240M).
4. Classification
6.1.3 Corrosion-Resisting Material—Corrosion-resisting
4.1 General—The washer shall be of the following type,
materialisotherthancorrosion-resistantsteelthatisequivalent
size, and class as specified.
in the pot, pan, and utensil washer application.
6.1.4 Nickel-Copper Alloy—Nickel-copper alloys shall con-
4.2 Types:
form to the requirements of Specification B127.
4.2.1 Motor-Driven Continuous Rotary Conveyor:
4.2.1.1 Type I—One door (front loading).
7. Design and Construction
4.2.1.2 Type II—One or two door (pass-through corner
7.1 The pot, pan, and utensil washing machine shall be
operation).
complete so that when connected to the specified source of
4.2.1.3 Type III—One or two door (pass-through straight
power, water supply, heating means (steam or electric),
line operation).
drainage, detergent feeder as applicable, the unit can be used
4.2.1.4 Size 1—Nominal 42-in. diameter.
for its intended function. Machines shall be rigid and quiet in
4.2.1.5 Size 2—Nominal 60-in. diameter.
operation. Parts requiring adjustment or service, or both, shall
4.2.1.6 Size 3—Nominal 74-in. diameter.
be readily accessible. The machine shall wash pots, pans, and
4.2.1.7 Size 4—Nominal 86-in. diameter.
utensils by means of a water and detergent solution pumped
4.3 Tank Heat:
from a tank, and shall final rinse the pots, pans, and utensils
4.3.1 Style 1—Steam heated.
with fresh water from an outside source at 20 6 5 psi (137.8 6
4.3.1.1 Class A—Injection.
34.4 kPa) flow pressure. Provisions shall be made to fill the
4.3.1.2 Class B—Heat exchange coil.
wash tank, either directly from the regular hot water supply
4.3.2 Style 2—Electric heat.
with a hand valve, or through the booster or solenoid, or both.
The wash, dwell, and rinse cycles shall be automatically
5. Ordering Information
controlled. A light shall be provided to indicate when the
5.1 Purchasers should select the preferred options permitted
machine is in operation. Machines shall be provided with a
in this specification and include the following information in motor-driven rotary table, constructed of corrosion-resistant
the procurement document.
steel or other corrosion-resisting material. They shall have an
5.1.1 Title, number, and date of this standard; type, style, inside working height, including the door height, of not less
and class of machine required.
than 27 in. (686 mm).
5.1.2 A pressure-reducing valve, if required (see 7.4). In-
7.2 Piping, Tubing, Fittings, and Valves (Installation)—
coming water pressure must be specified when ordering a
Connections shall be readily accessible to facilitate installation
pressure reduction valve.
and maintenance. (See Specifications B43, B75, A53/A53M,
5.1.3 A standard 40°F (22°C) temperature rise steam, or
and A554.)
electric booster if required. If the required temperature rise is
7.3 Piping and Fittings—Water, steam piping, and fittings
more than 40°F (22°C) (see 7.13), it should be specified.
shall be of corrosion-resisting material or suitable heat-
5.1.4 Electrical power supply characteristics (voltage,
resisting plastic material. Fresh water supply to the tank shall
phase, frequency) (see 7.11.3).
be discharged not lower than 2 in. (50.8 mm) above the
5.1.5 A detergent feeder, if required (see 7.14).
maximum flood level rim, or an effective air gap or vacuum
5.1.6 Accessory equipment, spare and maintenance parts
breaker shall be installed to prevent backflow in accordance
required, selected options.
with NSF/ANSI 3. The drain and other plumbing connections
5.1.7 Treatment and painting if other than specified (see
shall be standard pipe or tubing connections. Drains may be
7.17).
joined into a single trunk line requiring only one connection or
arranged to permit individual connections to the waste line.
7.4 Valves—Steam valves shall be corrosion-resisting mate-
Available from Underwriters Laboratories (UL), 333 Pfingsten Rd.,
Northbrook, IL 60062. rial designed for steam applications and for a saturated steam
F1203−22
working pressure of 50 psi (344.6 kPa). The drain valve, when 7.11.3 Motor—The rotary conveyor table assembly shall be
used, shall be permanently marked to show “open” and motordriven(seeNEMAICS,NEMAMG-1,andNFPA/ANSI
“closed” positions, and shall be lever-operated when drain 70). The drive shall be outfitted with a safety slip clutch or
valve closure is automatic. Fresh water rinse valves shall be other method to prevent damage from a stalled conveyor.
reliable and fully automatic and suitable for 210°F (98.9°C)
7.12 Heating—Style 1 and 2 machines shall be capable of
water. The manually operated valves, when used, shall be
maintaining required temperature levels in the tank.
identified. When specified (see 5.1.2), a water pressure reduc-
7.12.1 Style 1—Style 1 machines shall be suitable for
ingvalveshallbeprovidedforreducingwaterpressureto2
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: F1203 − 16 F1203 − 22 An American National Standard
Standard Specification for
Washing Machines—Pot, Pan, and Utensil, Heat Sanitizing,
Commercial Rotary Conveyor Type
This standard is issued under the fixed designation F1203; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This specification covers manually fed, motor-driven rotary conveyor type, automatically controlled, commercial pot, pan, and
utensil washing machines, hereinafter referred to as “the washer.”
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.3 The following precautionary statement pertains only to the test methods portion, Section 9, of this specification: This
standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user
of this standard to establish appropriate safety safety, health, and healthenvironmental practices and determine the applicability
of regulatory limitations prior to use.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
A53/A53M Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless
A240/A240M Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and
for General Applications
A436 Specification for Austenitic Gray Iron Castings
A554 Specification for Welded Stainless Steel Mechanical Tubing
B43 Specification for Seamless Red Brass Pipe, Standard Sizes
B75 Specification for Seamless Copper Tube (Metric) B0075_B0075M
B127 Specification for Nickel-Copper Alloy Plate, Sheet, and Strip
D3951 Practice for Commercial Packaging
F760 Specification for Food Service Equipment Manuals
F1021 Specification for Feeders, Detergent, Rinse Agent, and Sanitizing Agent for Commercial Dishwashing and Glasswashing
Machines
F1696 Test Method for Energy Performance of Stationary-Rack, Door-Type Commercial Dishwashing Machines
This specification is under the jurisdiction of ASTM Committee F26 on Food Service Equipment and is the direct responsibility of Subcommittee F26.01 on Cleaning
and Sanitation Equipment.
Current edition approved Dec. 1, 2016April 1, 2022. Published January 2017April 2022. Originally approved in 1988. Last previous edition approved in 20112016 as
F1203 – 11.F1203 – 16. DOI: 10.1520/F1203-16.10.1520/F1203-22.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F1203 − 22
2.2 American National Standards:
ANSI SI.4 Specification for Sound Level Meters
ANSI SI.13 Methods for the Measurement of Sound Pressure Levels
2.3 Federal Regulations:
OSHA Title 29
2.4 National Electrical Manufacturers Association Standards:
NEMA ICS Industrial Controls and Systems
NEMA MG-I Motors and Generators
2.5 National Fire Protection Association Standard:
NFPA/ANSI 70 National Electrical Code
2.6 NSF International Standards:
NSF/ANSI 3 Commercial Warewashing Equipment
NSF/ANSI 5 Commercial Hot Water Generating Equipment
NSF/ANSI 29 Detergent/Chemical Feeders for Commercial Spray-Type Dishwashing Machines
NSF Listings–Food Equipment
2.7 Underwriters Laboratories Standard:
UL 921 Commercial Dishwashers
3. Terminology
3.1 Definitions:
3.1.1 commercial pot, pan, and utensil washing machines—machines that uniformly wash, rinse and heat sanitize food preparation
utensils. The machines shall be capable of removing physical soil and sanitizing properly racked and pre-scraped multiple pots,
pans, and utensils. The machines shall consist of the following principal parts: legs, wash chamber, hood, tank, doors, spray
assemblies, pumps, motors, controls, piping, valves, heating equipment and accessories.
4. Classification
4.1 General—The washer shall be of the following type, size, and class as specified.
4.2 Types:
4.2.1 Motor-Driven Continuous Rotary Conveyor:
4.2.1.1 Type I—One door (front loading).
4.2.1.2 Type II—One or two door (pass-through corner operation).
4.2.1.3 Type III—One or two door (pass-through straight line operation).
4.2.1.4 Size 1—Nominal 42-in. diameter.
4.2.1.5 Size 2—Nominal 60-in. diameter.
4.2.1.6 Size 3—Nominal 74-in. diameter.
4.2.1.7 Size 4—Nominal 86-in. diameter.
4.3 Tank Heat:
4.3.1 Style 1—Steam heated.
Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036.
Available from Standardization Documents Order Desk, DODSSP, Bldg. 4, Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098.
Available from National Electrical Manufacturers Association (NEMA), 1300 N. 17th St., Suite 1847, Rosslyn, VA 22209.
Available from National Fire Protection Association (NFPA), 1 Batterymarch Park, Quincy, MA 02269-9101.
Available from NSF International, P.O. Box 130140, 789 N. Dixboro Rd., Ann Arbor, MI 48113-0140.
Available from Underwriters Laboratories (UL), 333 Pfingsten Rd., Northbrook, IL 60062.
F1203 − 22
4.3.1.1 Class A—Injection.
4.3.1.2 Class B—Heat exchange coil.
4.3.2 Style 2—Electric heat.
5. Ordering Information
5.1 Purchasers should select the preferred options permitted in this specification and include the following information in the
procurement document.
5.1.1 Title, number, and date of this standard; type, style, and class of machine required.
5.1.2 A pressure-reducing valve, if required (see 7.4). Incoming water pressure must be specified when ordering a pressure
reduction valve.
5.1.3 A standard 40°F (22°C) temperature rise steam, or electric booster if required. If the required temperature rise is more than
40°F (22°C) (see 7.13), it should be specified.
5.1.4 Electrical power supply characteristics (voltage, phase, frequency) (see 7.11.3).
5.1.5 A detergent feeder, if required (see 7.14).
5.1.6 Accessory equipment, spare and maintenance parts required, selected options.
5.1.7 Treatment and painting if other than specified (see 7.17).
5.1.8 When energy consumption profiles, water consumption profiles, or productivity profiles are desired (see 9.3).
5.1.9 Manufacturer’s certification, when required (see Section 10).
6. Materials
6.1 All materials shall be specified as follows:
6.1.1 Materials used shall be free from defects that would adversely affect the performance or maintainability of individual
components of the overall assembly. The pot, pan, and utensil washing machines shall meet the material, design, and construction
requirements of NSF/ANSI 3.
6.1.2 Corrosion-Resistant Steel—Corrosion-resistant steel shall conform to the requirements of any 300 series stainless steel
specified in 2.1 (see Specification A240/A240M).
6.1.3 Corrosion-Resisting Material—Corrosion-resisting material is other than corrosion-resistant steel that is equivalent in the
pot, pan, and utensil washer application.
6.1.4 Nickel-Copper Alloy—Nickel-copper alloys shall conform to the requirements of Specification B127.
7. Design and Construction
7.1 The pot, pan, and utensil washing machine shall be complete so that when connected to the specified source of power, water
supply, heating means (steam or electric), drainage, detergent feeder as applicable, the unit can be used for its intended function.
Machines shall be rigid and quiet in operation. Parts requiring adjustment or service, or both, shall be readily accessible. The
machine shall wash pots, pans, and utensils by means of a water and detergent solution pumped from a tank, and shall final rinse
the pots, pans, and utensils with fresh water from an outside source at 20 6 5 psi (137.8 6 34.4 kPa) flow pressure. Provisions
shall be made to fill the wash tank, either directly from the regular hot water supply with a hand valve, or through the booster or
solenoid, or both. The wash, dwell, and rinse cycles shall be automatically controlled. A light shall be provided to indicate when
F1203 − 22
the machine is in operation. Machines shall be provided with a motor-driven rotary table, constructed of corrosion-resistant steel
or other corrosion-resisting material. They shall have an inside working height, including the door height, of not less than 27 in.
(686 mm).
7.2 Piping, Tubing, Fittings, and Valves (Installation)—Connections shall be readily accessible to facilitate installation and
maintenance. (See Specifications B43, B75, A53/A53M, and A554.)
7.3 Piping and Fittings—Water, steam piping, and fittings shall be of corrosion-resisting material or suitable heat-resisting plastic
material. Fresh water supply to the tank shall be discharged not lower than 2 in. (50.8 mm) above the maximum flood level rim,
or an effective air gap or vacuum breaker shall be installed to prevent backflow in accordance with NSF/ANSI 3. The drain and
other plumbing connections shall be standard pipe or tubing connections. Drains may be joined into a single trunk line requiring
only one connection or arranged to permit individual connections to the waste line.
7.4 Valves—Steam valves shall be corrosion-resisting material designed for steam applications and for a saturated steam working
pressure of 50 psi (344.6 kPa). The drain valve, when used, shall be permanently marked to show “open” and “closed” positions,
and shall be lever-operated when drain valve closure is automatic. Fresh water rinse valves shall be reliable and fully automatic
and suitable for 210°F (98.9°C) water. The manually operated valves, when used, shall be identified. When specified (see 5.1.2),
a water pressure reducing valve shall be provided for reducing water pressure to 20 6 5 psi (137.8 6 34.4 kPa). (See ANSI SI.4
and ANSI SI.13.)
7.5 Spray Assembles—All spray nozzles and spray manifolds shall be rigid spray pipe, easily cleanable, and shall be of
corrosion-resisting materials. The main spray assembly shall include separate wash and rinse pipes located above, below, and on
the side of the work.
7.6 Tank and Housing—The tank and housing shall be constructed of
...
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