ASTM F1565-00(2019)

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: F1565 −00 (Reapproved 2019) An American National Standard
Standard Specification for
Pressure-Reducing Valves for Steam Service
This standard is issued under the fixed designation F1565; 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 A217/A217M Specification for Steel Castings, Martensitic
Stainless and Alloy, for Pressure-Containing Parts, Suit-
1.1 This specification covers self-contained, internally
able for High-Temperature Service
operated,globestyle,pressure-reducingvalvesforuseinsteam
A515/A515M Specification for Pressure Vessel Plates, Car-
service. In these valves, the downstream pressure feedback is
bon Steel, for Intermediate- and Higher-Temperature Ser-
sensed by a spring-loaded diaphragm to position a pilot
vice
valve—the pilot valve uses the inlet steam pressure to position
A516/A516M Specification for Pressure Vessel Plates, Car-
the main valve plug by means of an operating piston.
bon Steel, for Moderate- and Lower-Temperature Service
1.2 The values stated in inch-pound units are to be regarded
A547 Specification for Steel Wire, Alloy, Cold-Heading
as standard. No other units of measurement are included in this
Quality, for Hexagon-Head Bolts (Withdrawn 1989)
standard. 4
2.2 ASME Standards:
1.3 This international standard was developed in accor-
B1.1 Unified Screw Threads
dance with internationally recognized principles on standard-
B16.5 Pipe Flanges and Flanged Fittings
ization established in the Decision on Principles for the
B16.34 Valves—Flanged, Threaded, and Welding End
Development of International Standards, Guides and Recom-
B18.2.1 Square, Hex, Heavy Hex, and Askew Head Bolts
mendations issued by the World Trade Organization Technical
and Hex, Heavy Hex, Hex Flange, Lobed Head, and Lag
Barriers to Trade (TBT) Committee.
Screws
2.3 Federal Specification:
2. Referenced Documents
FED-STD-H 28 Screw-Thread Standards for Federal Ser-
2.1 ASTM Standards:
vices
A105/A105M Specification for Carbon Steel Forgings for
2.4 Military Standards and Specifications:
Piping Applications
MIL-V-3 Valves, Fittings, and Flanges (Except for Systems
A182/A182M Specification for Forged or Rolled Alloy and
Indicated Herein); Packaging of
Stainless Steel Pipe Flanges, Forged Fittings, and Valves
MIL-S-901 Shock Tests, H.I. (High Impact); Shipboard
and Parts for High-Temperature Service
Machinery, Equipment and Systems, Requirements for
A193/A193M Specification for Alloy-Steel and Stainless
MIL-R-2765 Rubber Sheet Strip, Extruded, and Molded
Steel Bolting for High Temperature or High Pressure
Shapes, Synthetic, Oil Resistant
Service and Other Special Purpose Applications
MIL-P-15024 Plates, Tags and Bands for Identification of
A194/A194M Specification for Carbon Steel, Alloy Steel,
Equipment
and Stainless Steel Nuts for Bolts for High Pressure or
MIL-P-15024/5 Plates, Identification
High Temperature Service, or Both
MIL-R-17131 Rods and Powders, Welding, Surfacing
A216/A216M SpecificationforSteelCastings,Carbon,Suit-
MIL-G-24716 Gaskets, Metallic-Flexible Graphite, Spiral
able for Fusion Welding, for High-Temperature Service
Wound
MIL-I-45208 Inspection Systems Requirements
MIL-STD-167-1 Mechanical Vibrations of Shipboard
Equipment (Type I—Environmental and Type II—
1 Internally Excited)
This specification is under the jurisdiction of ASTM Committee F25 on Ships
and Marine Technology and is the direct responsibility of Subcommittee F25.11 on
Machinery and Piping Systems.
Current edition approved May 1, 2019. Published June 2019. Originally The last approved version of this historical standard is referenced on
approved in 1994. Last previous edition approved in 2013 as F1565 – 00 (2013). www.astm.org.
DOI: 10.1520/F1565-00R19. Available from American Society of Mechanical Engineers (ASME), ASME
For referenced ASTM standards, visit the ASTM website, www.astm.org, or International Headquarters, Two Park Ave., New York, NY 10016-5990, http://
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM www.asme.org.
Standards volume information, refer to the standard’s Document Summary page on Available from DLA Document Services, Building 4/D, 700 Robbins Ave.,
the ASTM website. Philadelphia, PA 19111-5094, http://quicksearch.dla.mil.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
F1565 − 00 (2019)
NAVSEA T9074–AQ-GIB-010/271 Nondestructive Testing
Requirements for Metals
NAVSEAS9074–AR-GIB-010/278 FabricationWeldingand
Inspections and Casting Inspection and Repair for
Machinery, Piping and Pressure Vessels in Ships of the
United States Navy
MIL-STD-798 Nondestructive Testing, Welding, Quality
Control, Material Control and Identification and Hi-Shock
Test Requirements for Piping System Components for
Naval Shipboard Use
MS 16142 Boss, Gasket Seal Straight Thread Tube Fitting,
Standard Dimensions for
3. Terminology
3.1 Definitions:
3.1.1 accuracy of regulation, n—the amount by which the
downstream pressure may vary when the valve is set at any
pressure within the required set pressure limit and is subjected
to any combination of inlet pressure, flow demand, and
ambient temperature variations, within the specified limits.
3.1.2 design pressure and temperature, n—the maximum
pressure and temperature the valve should be subjected to
under any condition. These are the pressure and temperature
upon which the strength of the pressure-containing envelope is
based.
3.1.3 hydrostatic test pressure, n—the maximum test pres-
sure that the valve is required to withstand without damage.
Valve operation is not required during application of this test
pressure, but after the pressure has been removed, the valve
must meet all performance requirements.
3.1.4 lockup pressure, n—the outlet pressure delivered by a
pressure-reducing valve under shutoff conditions (that is, when
NOTE 1—Pictorial representations are for illustrative purpose only and
the flow demand is reduced to a point where it is equal to or
do not imply design.
less than the allowable leakage as defined in 8.3).
FIG. 1 Pressure-Reducing Valve (External Pressure Sensing)
3.1.5 nominal pressure, n—the approximate maximum pres-
sure to which the valve will be subjected in service under
4.3 Pressure Ratings—These shall conform toASME Class
normal conditions.
150, Class 300, Class 600, or Class 1500.
3.1.6 set pressure, n—the downstream pressure which the
valve is set to maintain under a given set of operating
5. Ordering Information
conditions (that is, inlet pressure and flow). Ideally, the valve
5.1 Ordering documentation for valves under this specifica-
should be set at downstream pressure approximately equal to
tion shall include the following information, as required, to
the mid-point of the set pressure limits (defined in 3.1.7).
describe the equipment adequately.
3.1.7 set pressure limits (range of set pressure adjustment),
5.1.1 ASTM designation and year of issue.
n—the range of set pressure over which the valve can be
5.1.2 Valve specification code (see 6.1.14).
adjusted while meeting the specified performance require-
5.1.3 Composition and pressure rating required (see Section
ments.
4).
5.1.4 Trim materials where specific requirement is known
4. Classification
(see Table 1, Footnote B, Note 2).
4.1 Valves shall be of the following compositions and
5.1.5 Whether internal or external reduced pressure sensing
pressure ratings, as specified (see Section 5 and 6.1.7). The
line is required (see 6.1.2.1).
pressure-temperatureratingsshownbelowareapplicabletothe
5.1.6 Accuracy of regulation required if other than listed in
pressure-containing components of the valve. See Fig. 1 and
7.2.
Fig. 2.
5.1.7 Minimum and maximum inlet steam pressures (psig)
1 1
4.1.1 Composition B—1 ⁄4 % chromium, ⁄2 % molybdenum
(see 7.3 and S1.5).
[maximum temperature 1000°F (see 6.1.7)].
5.1.8 Maximum inlet steam temperature (°F) (see S1.5).
4.2 Composition D—carbon steel [maximum temperature 5.1.9 Range of set pressure adjustment for valves, if other
775°F (see 6.1.7)]. than listed in 7.4.
F1565 − 00 (2019)
TABLE 1 List of Material
Name of Parts Composition B Composition D
Body, bonnet, and ASTM A182/A182M, ASTM A105/A105M,
A
bottom cover Grade F11 ASTM A216/A216M,
ASTM A217/A217M, Grade WCB, ASTM
Grade WC6 A515/A515M,
A516/A516M,
A547
BB
Internal trim
Cylinder liner and piston 400 series CRES 400 series CRES
500 Brinell min hard 500 Brinell min hard
Gaskets MIL-G-24716, Class B MIL-G-24716, Class B
Diaphragm Ni-Cr alloy Ni-Cr alloy
300 series CRES 300 series CRES
CC
Springs
A
Bolting ASTM A193/A193M, ASTM A193/A193M,
Grade B16 Grade B7
ASTM A194/A194M, ASTM A194/A194M,
Grade 2H Grade 2H
A
If desired by the manufacturer, the higher grade bolting materials may be used
inlowertemperaturecategories(forexample,SpecificationA194/A194M,Grade4
may be used for Composition B, and so forth) and also higher grade body
materials for Composition B and D valves (for example, Specification A182/
A182M, Grade F22 for Composition B, and so forth).
B
Trim Materials—Unless otherwise specified (see 5.1), the valve manufacturer
shall select from the categories listed below the trim materials best suited to meet
the requirements.
(1) Main Valve Trim Materials—Main valve trim (defined as consisting of the
seat or seat ring and plug and the guide posts and bushings) materials shall be
selected from the following:
(a) Stellite—Trim to be Stellite.
(b) HardenedCorrosion-ResistantSteel—Hardenedcorrosion-resistantsteel
plug (400 series or 17-4 PH) and Stellite seat or seat ring. Guiding surfaces to be
hardened corrosion-resistant steel or Stellite.
Nongalling grades of materials shall be chosen to prevent galling between
rubbing surfaces. A difference in hardness of at least 100 points Brinell shall be
maintained between the rubbing guiding surfaces. This requirement does not
apply if both the guide surfaces are Stellited or if the hardness of either exceeds
450 Brinell.
(c) Where Stellite is used, it shall consist of either wrought Stellite 6B, cast
Stellite 6, or an inlay of Stellite (not less than ⁄32-in. thickness for main seat and
disk surfaces). Where inlays are used, welding rods shall be in accordance with
Type MIL-RCoCr-A or MIL-R-17131.
NOTE 1—Pictorial representations are for illustrative purpose only and
(2) Pilot Valve Trim Materials—Pilot valve trim (defined as consisting of the
do not imply design.
seat,valve,andguidingsurfaces)shallbemadefromoneoracombinationofthe
FIG. 2 Pressure-Reducing Valve (Internal Pressure Sensing)
following materials:
(a) 400 series or 17-4PH corrosion-resistant steel-hardened.
(b) Stellite.
C
Spring Materials—Where the working temperature of the spring will exceed
600°F, either Inconel X-750 orA-286 alloy steel shall be used. Where the working
5.1.10 Maximum and minimum capacity required lb/hour.
temperature of the spring exceeds 450°F, but not 600°F, Inconel 600 or tungsten
5.1.11 Special tools, if required (see 6.1.15).
tool steel may also be used. Where the working temperature of the spring will not
exceed 450°F, 300 series corrosion-resistant steel may be used.
5.1.12 Supplementary requirements, if any (see S1 through
S4).
6. Valve Construction and Coding
6.1.2.2 The operating piston shall be separate from the main
6.1 Valves shall incorporate the design features specified in valve and fitted with one or more piston rings.The design shall
6.1.1 – 6.1.14. prevent water buildup on the piston. The piston shall operate
6.1.1 Materials of Construction—Materials shall be as within a separate hardened steel cylinder liner located in the
specified in Table 1. All materials shall be selected to prevent valve body so that removal of the valve bonnet provides access
corrosion, galling, seizing, and excessive wear or erosion to the top of the piston assembly. The cylinder liner shall be
where applicable. Clearances shall prevent interference as a held in place by way of the bonnet bolting or shall be
resultofthethermalexpansion.Cadmiumplatingisprohibited. permanently fabricated into the body. The requirement to
6.1.2 General Requirements: locate the cylinder liner in the body may be waived where it is
6.1.2.1 Valves will be operated, maintained, and repaired on shown that an alternative location provides a satisfactory
board ships and shall emphasize simplicity, maintainability, maintenance configuration. Pilot valve and diaphragm cham-
ruggedness, and reliability. Design shall permit access for bers shall be self-draining. The pilot valve shall be single
adjustment and repair when working from either side of the seated with integral stem. The valve shall be controlled by a
valveandwithoutrequiringremovalofthevalvebodyfromthe spring-referenced metal diaphragm and shall open against high
line. Valves shall be of the self-contained, internal-operated pressure. A return spring shall keep the pilot valve in contact
type as described in 1.1. with the diaphragm at all times.The diaphragm shall not travel
F1565 − 00 (2019)
throughcenterduringanyphaseofoperation.Edgescontacting (1) Through-bolts or studs threaded the entire length and
the diaphragm shall be rounded to prevent wear and damage. fitted with a nut on each end. Threads on bolts, studs, and nuts
Condensate chamber or other suitable means shall be provided shall be Class 2 fit in accordance with ASME B1.1.
to preclude internal wetted springs from being exposed to (2) Studs with interference fit at the tap end sufficient to
preclude inadvertent backing out and a Class 2 fit at the nut
temperatures exceeding their material limitations. The reduced
pressure sensing line shall be internal or external as specified end.
(see 5.1). Bonnet and bottom cover shall be located by body guiding
(that is, a close tolerance fit between machined diameters on
6.1.3 Maintainability—Internal parts shall permit easy dis-
the body, bonnet, and bottom cover) rather than depending on
assemblyandreassemblywithstandardtoolsandshallprevent,
studs or bolts for location. Spiral wound gaskets shall be fully
as far as practical, the incorrect reassembly of parts. Position-
retained, and the joints shall have metal-to-metal take-up to
ing and alignment of all parts in assembly shall use positive
provide controlled compression of the gaskets. To assure easy
means so that correct reassembly is repeatedly assured. Parts
gasket removal, not more than two gasket-retaining faces for
for a given valve shall not be physically interchangeable or
each gasket shall be formed on a single part. Joint design shall
reversible, unless such parts are also interchangeable or revers-
assure parallel alignment of the guide bushings. Sufficient
ible with regard to function, performance, and strength. Valve
bolting area shall be provided to maintain metal-to-metal
design shall permit accomplishment of the following mainte-
make-up over at least a three-year period. Bearing surface of
nance actions within the time limits specified:
nuts and their respective surfaces on the valve shall be finished
Action Time Allowed
machined.
Disassemble, replace pilot assembly, reassemble ⁄2 h
6.1.10 Body Construction—Valve bodies shall be machined
Renew pilot valve assembly trim ⁄2 h
from a one-piece casting or forging and shall be of basic globe
Renew main valve trim ⁄4 h
configurations with in-line inlet and outlet ports. Steam lines,
6.1.4 Interchangeability—Valve design shall permit inter-
except for the external downstream pressure sensing line
changeability without individual modification of like parts
(where used), shall be internally ported in the body and bonnet.
between all valves. Each part shall have part number identity
Body passages shall produce gradual changes in flow direction
and shall be replaceable from stock or the manufacturer on a
so as to reduce any effects of concentrated impingement and
nonselective and random basis. With the exception of matched
90° turns. In portions of the valve subject to velocity increases
parts, parts having the same manufacturer’s part number shall
and flow direction changes, such as immediately downstream
be directly interchangeable with each other with respect to
of the seat, the design shall eliminate direct impingement
installation (physical) and performance (function). Physically
against the walls at close range.
interchangeable assemblies, components, and parts are those
6.1.11 Control Connections—Where external downstream
thatarecapableofbeingreadilyinstalled,removed,orreplaced
sensing is used, a ⁄2-in. iron pipe size (i.p.s.) flanged
without alteration, misalignment, or damage to parts being
connection, which is either cast or forged integral with the
installed or to adjoining parts. Fabrication operations such as
body or bonnet or welded, shall be provided.
cutting, filing, drilling, reaming, hammering, bending, prying,
6.1.12 Internal Trim—Internal trim (except welded or
or forcing shall not be required.
brazed-in seat rings) shall be readily replaceable without
6.1.5 Springs—Springs shall not be fully compressed during
requiring removal of the valve body from the line. The main
any normal operation or adjustment of the valve. The working
plug or disk shall be single seated. Guiding of the plug or disk
stress shall be such that relaxation shall not exceed 5 % over a
shallpreventbindingorseizingandinsureproperseatingunder
1000-h period at the nominal operating temperature. Spring
all design conditions. This requirement shall be maintained
ends shall be squared and ground.
with interchangeable parts and under any tolerance stack-up
6.1.6 Threads—Threads shall conform to ASME B1.1.
condition.
Where necessary, provisions shall be incorporated to prevent
6.1.13 Set Point Adjustment—Means shall be provided for
accidentallooseningofthreadedparts.Pipethreadsshallnotbe
adjusting the set point through the specified range, with the
used. ASME B18.2.1 hex-head standards shall be used.
valve under pressure. The adjusting or loading device shall be
6.1.7 Pressure-Temperature Ratings—Valve pressure-
safeguarded against accidental change in set point.
temperature rating shall be in accordance with ASME B16.34
6.1.14 Valve Specification Coding—Basic valve design fea-
except for maximum allowable temperature. Maximum tem-
tures shall be specified and recorded using the following valve
perature limitations shall be as follows:
coding system. The valve specification code contains four
6.1.7.1 Composition B—1000°F. fields of information, which describe the construction features
of the valve. Each of these four fields are further assigned their
6.1.7.2 Composition D—775°F.
respective codes in accordance with Tables 2-5.
6.1.8 End Preparation—Valves shall be furnished with
ASTM Valve pres- Valve com- Valve size Set pres-
flangedendsinaccordancewithASMEB16.5.Flangesshallbe
F1565 sure-rat- position code sure-
cast or forged integral with the valve body, and the inlet and
ing code code (Table 4) range
outlet flanges shall be of the same size and pressure rating.
(Table 2) (Table 3) code
(Table 5)
6.1.9 Bonnet and Bottom Cover Joints—Bonnet and bottom
cover (where applicable) shall be flanged for attachment to the 6.1.15 Maintainability—Maintenance shall require standard
body. Joints shall be secured by either of the following: tools to the maximum extent possible.Any special tools, which
F1565 − 00 (2019)
TABLE 2 Valve Pressure Rating Code
7.5 Seat Tightness—With a dead-end downstream volume
Pressure Rating Code not exceeding the volume represented by 100 diameters of
ASME 150 A downstreampipe,anysteamleakagefromtheinlettot
...