American Society for Testing and Materials (ASTM)     - ValveDepot Reference Document                                            
Number       Explanation                           
 
A-48   This specification covers gray iron castings intended for general engineering use where tensile strength is a major consideration.
 
A-53   Covers seamless and welded black and galvanized steel Pipe furnished in the following types and grades:
Type F - furnace Butt Welded (also known as continuous Weld) 1/8 in. to 4 in. NPS
       Type E - Electric-Resistance Welded, Grades A and B 1/8 in.To 24 in. NPS
       Type S - Seamless, Grades A and B 1/8 in. to 26 in. NPS Except for Type F, pipe ordered to this specification is 
       suitable For forming, bending, and flanging.  Grade B, the most common, has a minimum yield of 35,000 psi.
 
A-72   Welded wrought iron pipe in Std. XS, and XXS weights suitable for fabrication.  More highly resistant to some types of corrosion than carbon steel, astm 72 is suited for protective 
       ciating such as galvanizing.  Although highly resistant to vibration, wrought iron has a somewhat low tensile strength due to a low carbon content.
 
A-105  This specification covers forged carbon steel piping  components for ambient and higher temperature service in pressure systems.  Included are flanges, fittings, valves 
       and similar parts ordered either to dimensions specified by the purchaser or to dimensional standards such as the ANSI and API specifications referenced in the full ASTM 
       Specification.
       Forgings made to this specification are limited to a maximum   weight of 10000 lb or 4540 kg.  Larger forgings may be ordered  to Specification A 266.  Tubesheets and hollow cylindrical
       forgings for pressure vessel shells are not included within the scope of this specification.  Although this specification covers some piping components machined from rolled bar and
       seamless tubular products, it does not cover raw material produced in these forms.
 
A-106  Covers seamless only carbon steel pipe for high-temperature service.  Furnished in one of three grades, A, B, or C.  Suitable for bending, flanging, and similar forming operations.
 
A-126  This specification covers three classes of gray iron for castings intended for use as valve pressure retaining parts, threaded and flanged pipe fittings and flanges.
 
A-134  Covers electric-fusion-(arc)-welded straight seam or spiral Seam plate pipe 16 in. and over in diameter, with wall thicknesses up to 0.75 in.  This pipe is intended for conveying
       liquid, gas or vapour.
 
A-135  Covers two grades of electric-resistance-welded steel pipe(A and B) 30 in. diameter and under.  Pipe is intended for  conveying liquid, gas or vapour; and only grade A is adapted
       for flanging and bending.
 
A-139  Covers five grades (A and E) of electric-fusion-(arc)-welded,  Straight-seam, or spiral-seam steel pipe, 4 in. and over in    Diameter with nominal wall thicknesses up to 1.00 in.  Has
       different mechanical properties than standard plate grades.    Used for conveying liquid, gas or vapour.
 
A-161  Covers seamless, hot finished and cold drawn, low carbon and   carbon-molybdenum steel still tubes, for use in carrying fluids At elevated temperatures and pressures in various types of
       Heaters.  This specification includes tubes 2 to 9 in. O.D.    Inclusive and over 0.220 in. in minimum wall thickness.
 
A-178  Covers electric-resistance-welded tubes made of carbon steel   And intended for use as boiler tubes and superheater flues.    Includes tubes 1/2 in. to 5 in. O.D. and 0.035 to 0.320 in. in     Minimum wall thickness.
 
A-179  Covers seamless cold drawn low carbon steel tubes for tubular head transfer apparatus.  Includes sizes 1/8 to 3 in.  O.D. inclusive.

A-181(M) Standard Specification for Carbon Steel Forgings for General purpose piping

A-182  This specification covers forged low alloy and stainless steel piping components for use in pressure systems. Included are flanges, fittings, valves and similar parts 
       to specified dimensions or to dimensional standards such as the ANSI specifications referenced in the full ASTM Specifications.
 
A-192  This specification supersedes A-83 and covers seamless carbon steel boiler and superheater tubes for high pressure service.  Includes sizes 1/2 to 7 in. O.D. and 0.085 to 1.000
       in. minimum wall thickness.
 
A-197  This specification covers malleable irons for castings manufactured by the cupola process.
 
A-199  Covers several grades of chromium-molybdenum and chromium- molybdenum-cilicon seamless cold drawn intermediate alloy steel Tubes for head exchangers, condensers, and similar heat
       transfer apparatus.  Includes sizes 1/8 in. to 3 in. inclusive in O.D.
 
A-200  Covers same grades as A-199 except use and size range varies.  This specification covers sizes 2 to 9 in. in O.D. and wall thickness over 0.220 min.
 
A-203  This specification covers nickel-alloy steel plates intended primarily for welded pressure vessles.  It covers five grades, A,  B, D, E and F.
 
A-204  This specification covers molybdenum-alloy steel plates, intended particularly for welded boilers and other pressure vessels covering three grades, A, B and C.
 
A-209  Covers three grades of seamless carbon-molybdenum alloy steel  Boiler and superheater tubes.  Includes sizes 1.2 to 5 in. in  O.D. and 0.035 to 0.500 in minimum wall thickness.
 
A-210  Covers seamless medium carbon steel boiler tubes and boiler    flues including safe ends, arch and stay tubes, and superheater tubes.  Includes sizes 1/2 to 5 in. in O.D. and 0.035 to 0.500   in. in minimum wall thickness.
 
A-211  Covers spiral welded steel or iron pipe 4 to 48 in. in diameter, and 0.0625 to 0.6875 in. in wall thickness.  Intended for conveying liquid, gas, or vapour.
 
A-213  This specification covers minimum-wall-thickness,     seamless ferritic and austenitic steel, boiler and superheater  tubes and austenitic steel heat-exchanger tubes, designated 
       Grades T5, TP304, etc.  These steels are referenced in the full ASTM Specification.
 
A-216  This specification covers carbon steel castings for valves,flanges, fittings or other pressure-containing parts for high-temperature service and of quality suitable for
       assembly with other castings or wrought-steel parts by fusion welding.  The three grades included are WCA, WCB and WCC.
 
A-217  This specification covers martensitic stainless steel and alloy steel castings for valves, flanges, fittings and other pressure-containing parts intended primarily for
       high-temperature and corrosive service.  The grades included in this specification are WC1, WC4, WC5, WC6, WC9, WC11, C5,C12 AND CA15.

A-230  Standard specification for steel wire oil - tempered carbon valve spring quality

A-232  Standard specification for chromium - vanadiun alloy steel valve spring quality

A-234  This specification covers wrought carbon steel and alloy steel fittings of seamless and welded construction  covered by the lastes revision of ANSI B 16.9, ANSI B 16.11, ANSI B 16.28, MSS-SP79 and MSS-SP95.  These fittings are for use in pressure piping and in pressure vessel fabrication for service at moderate and elevated temperatures. Fittings differing from these ANSI and MSS standards shallbe identified with the marking "S9".
 
A-240   This specification covers chromium, chromium-nickel and chromium-manganese-nickel stainless and heat-resisting steel  plate, sheet and strip for pressure vessels.
 
A-249  This specification covers nominal-wall-thickness welded tubes made from the austenitic steels, referenced in the full ASTM Specification, with various grades intended 
       for such use as boiler, superheater, or condenser tubes.
 
A-252  Covers welded and seamless steel pipe for piling application or Permanent load carrying member.  Available in Grades 1, 2 and 3 To meet physical properties as required.
 
A-269  This specification covers grades of nominal-wall-thickness,stainless steel tubing for general corrosion-resisting and low or high-temperature service, as referenced in the full ASTM Specification.
 
A-276  Standard Specification for Stainless Steel bars and Shapes
 
A-278  This specification covers gray iron for castings suitablefor pressure-containing parts for use at temperatures up to 650F.
 
A-297  This specification covers iron-chromium and iron-chromium-nickel alloy castings for heat-resistant service.
 
A-311  Covers stress-relieved cold-drawn carbon steel bars produced   To mechanical property requirements.  On class, B, is cold-drawn with higher than normal (heavy) drafts to provide       higher strength levels.
 
A-312  This specification covers seamless and straight-seam  welded austenitic steel pipe intended for high-tempurature and general corrosive service.
 
A-333  Covers nominal wall seamless and welded carbon and alloy steel  pipe intended for low temperature service.  (-50 to -320F).   Several grades are covered including Grades 1, 3, 4, 6, 7, 8, 
       and 9.
 
A-334  Covers six grades of seamless or welded carbon and alloy steel  tubes intended for use at low temperatures (-50 to -320F).
 
A-335  Covers nominal wall seamless alloy steel pipe intended for high temperature service.  Pipe ordered to this specification shall  be suitable for bending, flanging, and similar forming 
       operations, and for fusion welding.  Selection will depend upon design, service conditions, mechanical properties, and high temperature characteristics.  This specification covers twelve 
       grades, most common of which are Grades 1,5 7, 9, 11 and 22.
 
A-338  This specification covers malleable iron flanges, pipe fittings and valve parts, including parts to be assembled for use in railroad, marine and other heavy duty service applications 
       where fittings furnished in accordance American National Standard for Malleable Iron Threaded Fittings, Class 150 and  300 (ANSI B16.3) are not considered adequate.
 
A-350   This specification covers several grades of carbon and low-alloy steel forged or ring-rolled flanges, forged  fittings and valve intended primarily for low-temperature   service and requiring notch toughness testing.  They are  made to specified dimensions, or to dimensional standards, such as the ANSI and API specifications referenced in the full ASTM Specification.  
       Although this specification covers come piping components machined from rolled bar and seamless tubular materials.It does not cover raw material produced in these product forms.
 
A-351  This specification covers austenitic and austenitic-ferritic(duplex) steel castings for valves, fittings and other pressure-containing parts.  Grades included in this specification are CF3, CF8, CF3M, CF8M, CF3MN and so on.
 
A-352   This specification covers steel castings for valves, flanges,  fittings and other pressure-containing parts intended  primarily for low-temperature service.  This specification
       contains the following grades LCA, LCB, LCC, LC1, LC2, LC2-1, LC3, LC4, LC9 and CA6NM.
 
A-358   This specification covers electric-fusion-welded austenitic chromium-nickel alloy steel pipe suitable for corrosive or high-temperature service, or both.  (Although no restrictions are placed on the sizes of pipe which may be furnished under this specification, commercial practice is commonly limited to sizes not less than NPS 8).
 
A-387  This specification covers chromium-molybdenum alloy steel plates intended primarily for welded boilers and pressure vessels designed for elevated temperature service.  It covers the following grades, 2, 5, 9, 11, 12, 21, 21L, 22, 22L and 91.
 
A-403   This specification covers two general classes, WP and CR, of wrought austeitic stainless steel fittings of seamless and welded construction covered by the lastest  revision of ANSI B 16.9, ANSI B 16.11, ANSI B 16.28, MSS-SP79 and MSS-SP95.  Fittings differing from these ANSI and MSS standards shall be identified with the marking "S9".

A-404  Standards specification for forged or rolled alloy - steel pipe flanges forged fittings and valves and parts specially heat treated for high temperature service

A-405  Covers on grade (P-24) of seamless ferritic alloy-steel pipe specially heated treated for high temperature service.
 
A-420   This specification covers wrought carbon steel and alloy steel fittings of seamless and welded construction covered by the lastest revision of ANSI B 16.9, ANSI B 16.11, ANSI B 16.28, MSS-SP79 and MSS-SP95.  Fittings differing from these ANSI and MSS standards shall be identified with the marking "S6".  These fittings are for use in pressure piping and pressure vessel service at low temperatures.
 
A-500  Covers cold formed welded and seamless carbon square,  rectangular, or special shape structural tubing for general structural purposes.  Covers three grades:
       Grade A - 39,000 psi Min. Yield
       Grade B - 46,000 psi Min. Yield
       Grade C - 50,000 psi Min. Yield
 
A-501  Covers hot formed welded and seamless carbon steel, rectangular, square, or special shape tubing for general structural purposes.
 
A-512  This specification covers cold-drawn buttweld carbon steel tubes for use as mechanical tubing.  It covers round, square, rectangular, and special shapes.  Common grades in warehouse 
       stock are 1010, 1015, and 1020.
 
A-513  This specification covers electric-resistance welded  carbon and alloy steel tubing for use as mechanical tubing.  It covers round, square, rectangular, and special shapes made 
       from hot or cold rolled steel.  It covers "as welded," "sink drawn," "mandrel drawn," and "special smooth inside diameter."  
 
A-519  This specification covers a multitude of grades of carbon and alloy steel seamless mechanical tubing.  It covers both hot finished and cold drawn tubing up to and including 
       12-3/4 in. outside diameter with wall thickness as required.

A-522  Forged or rolled 8% and 9% nickel alloy steel flanges fittings valves and parts for low - temperature service

A-524  Covers seamless carbon steel pipe for process piping  applications.  Suitable for welding, bending, flanging, and similar forming operations.  Two grades are covered: Grade I 
       (0.375 in. wall thickness and under) and Grade II (greater than 0.375 in. wall thickness).
 

A-564  Standard Specification for Hot-Rolled and Cold-Finished Age-Hardening Stainless Steel bars and Shapes.

A-569  Standard specification for forgings carbon and alloy steel for pipe flanges fittings valves and parts for high - pressure transmission service

A-618  Covers three grades of hot-formed welded and seamless  high-strength low-alloy square, rectangular, round or special shape tubing for use in bridge or building construction and general structural purposes.
 
A-671  Covers electric-fusion-welded steel pipe with filler  metal added, fabricated from pressure vessel quality plate of  several analyses and strength levels and suitable for service 
       at atmospheric and lower temperatures.
 
A-672  Covers electric-fusion-welded steel pipe with filler metal added, fabricated from pressure vessel quality plate of several analyses and strength levels and suitable for 
       high-pressure service at moderate temperatures.
 
A-691  Covers electric-fusion-welded carbon and alloy steel pipe with filler metal added, fabricated from pressure vessel quality plate of several analyses and strength levels and 
       suitable for high-pressure service at high temperatures.
 
A-727  Standard specification for carbon steel forgings for piping components with inherent notch toughness
 

A-961  Standard Specification for Common Requirements for Steel Flanges, Forged Fittings, valves, and Parts for Piping Applications

B61

Standard Specification for Steam or Valve Bronze Castings.

B62

Standard Specification for Composition Bronze or Ounce Metal Castings

 
B-75   This specification covers seamless copper, round and rectagular, including square tube suitable for general engineering purposes.
 
B-75   This specification covers Copper UNS No. C12200 seamless copper water tube suitable for general plumbing,and similar applications for the conveyance of fluids, and
       commonly used with solder, flared, or compression type fittings.
 

B-98 Standard Specification for Copper-Silicon Alloy Rod, bar, and Shapes.

B-127   This specification covers rolled nickel-copper alloy (UNS04400) plate, sheet and strip.
 
B-139   Standard Specification for Phosphor Bronze Rod, bar, and Shapes
 
B-160   This specification covers nickel (UNS N02200) and low  carbon nickel (UNS N02201) in the form of hot-worked  and cold-worked rod and bar.
 
B-161   This specification covers nickel (UNS N02200) and low- carbon nickel (UNS N02201) in the form of cold-worked seamless pipe and tube.
 
B-162   This specification covers rolled nickel (UNS N02200)  and low-carbon nickel (UNS N02201) plate, sheet and strip.
 
B-163   This specification covers seamless tubes of nickel and nickel alloys for use in condenser and heat-exchanger  service.  Please see the appropriate ASTM specification
       for all the alloys covered by this specification.
 
B-164   This specification covers nickel-copper alloys (UNS N04400 and N04405), in the form of hot-worked and cold-worked rod and bar and cold-worked wire.
 
B-165   This specification covers nickel-copper alloy (UNS N04400), in the form of cold-worked seamless pipe and tube.
 
B-166   This specification covers nickel-chromium-iron alloys  (UNS N06600, N06601, N06690, N06025 and N06045) and nickel-chromium-cobalt-molybdenum alloy (UNS N06617)
       in the form of hot-finished and cold-worked rounds, squares, hexagons, rectangles and cold-worked wire.
 
B-167   This specification covers nickel-chromium-iron alloys (UNS N06600, N06601, N06690, N06025 and N06045) in cold-worked annealed, hot-worked annealed and hot-
       finished seamless pipe and tube intent for general corrosion resistant and heat resistant applications.
 
B-168   This specification covers rolled nickel-chromium-iron  alloys (UNS N06600, N06601, N06690, N06025 and N06045) and nickel-chromium-cobalt-molybdenum alloy 
       (UNS N06617) plate, sheet and strip.
 
B-194   Standard Specification for Copper-Beryllium Alloy Plate, Sheet, Strip, and Rolled bar
 
B-210   This specification covers aluminum and aluminum-alloy  drawn seamless tubes in straight lengths and coils for general purpose and pressure applications in  various alloys, tempers and thicknesses.  Coiled tubes are generally available only as round tubes with a wall thickness not exceeding 0.083 in. and only in nonheat-treatable alloys.  Please see the appropriate ASTM specification for all the alloys covered by this specification.
 
B-221   This specification covers aluminum and aluminum alloy  extruded bar, rod, wire, shape and tube in aluminum-alloys.  Please see the appropriate ASTM specification  for all the alloys covered by this specification.
 
B-234   This specification covers aluminum-alloy drawn seamless round tube in straight lengths designated for use in  surface condensers, evaporators and heat exchangers.  Please see the appropriate ASTM specification for all      the alloys covered by this specification.
 
B-241   This specification covers aluminum and aluminum-alloy  seamless pipe and extruded round seamless tube in various alloys and tempers intended for pressure applications.  Please see the appropriate ASTM  specification for all the alloys covered by this specification.
 
B-247   This specification covers aluminum-alloy die forgings, hand forgings and rolled ring forgings.  Please see the appropriate ASTM specification for all the alloys covered by this specification.
 
B-361   This specification covers only factory-made wrought aluminum and aluminum-alloy welding fittings in  contrast to field-made fittings.  Please see the appropriate ASTM specification for all the alloys covered by this specification.
 
B-366   This specification covers wrought welding fittings for pressure piping, factory-made from nickel and nickel alloys.  The term welding applies to butt-weld or socket-welding parts such as 45 and 90 elbows, 180 bends, caps, tees, reducers, lap-joint stub ends and other types, as covered by ANSI B 16.9, ANSI B 16.11, ANSI B 16.28 and  MSS-SP43.
 
B-407   This specification covers UNS N08800, N08801, N08810 and N08811 in the form of cold-worked and hot finished annealed seamless pipe and tube.  Alloy UNS N08800 is normally employed in service up to and including 1100F.  Alloys UNS N08810 and N08811 are normally employed in service temperatures above 1100F where resistance to creep and rupture is required, and they are annealed to develop controlled grain size for optimum properties in the temperature range.
 
B-408   This specification covers UNS N08800, N08801, N08810  and N08811 in the form of cold-worked and cold-worked  rod and bar.  Alloy UNS N08800 is normally employed in service up to and including 1100F.  Alloys UNS N08810 and N08811 are normally employed in service temperatures above 1100F where resistance to creep and rupture is required, and they are annealed to develop controlled grain size for optimum properties  in the temperature range.
 
B-409   This specification covers UNS N08800, UNS N08810 and UNS N08811 in the form of rolled plate, sheet and strip.  Alloy UNS N08800 is normally employed in service temperatures up to and including 1100 F or 593 C.  Alloys UNS N08810 and UNS N08811 are nomally empolyed in service temperatures above 1100 F or 593 C, where resistance to creep and rupture is required, and they are annealed to develop controlled grain size for optimum properties in this temperature range.
 
B-462   This specification covers forged or rolled UNS N08020, UNS N08024, UNS N08026, and UNS N08367 pipe flanges, forged fittings and valves and parts intended for corrosive high-temperature service.
 
B-463   This specification covers UNS N08020, UNS N08026 and UNS N08024 alloy plate, sheet and strip.
 
B-464   This specification covers welded UNS N08020,  UNS N08024 and UNS N08026 alloy pipe for general corrosion-resisting and low or high-temperature service.
 
B-468   This specification covers welded UNS N08020,  UNS N08024 and UNS N08026 alloy boiler, heat exchanger and condenser tubes for general corrosion-resisting and low or high-temperature service.
 
B-474   This specification covers electric fusion welded UNS N08020, UNS N08026 and UNS N08024 alloy pipe suitable for high-temperature or corrosive service.  (Although no restrictions are placed on the sizes of pipe that may be furnished under this specification, commercial practice   is commonly limited to sizes not less than NPS 8).
 
B-483   This specification covers aluminum and aluminum-alloy  drawn tubes in straight lengths and coils for general purpose applications in various alloys. Please see the appropriate ASTM specification for  all the alloys covered by this specification.
 
B-574   This specification covers rod of low-carbon  nickel-molybdenum-chromium alloys, (UNS N10276, N06022 and N06455), low-carbon nickel-chromium-molybdenum alloy(UNS N06059),and low-carbon nickel-chromium-molybdenum-tungsten  alloy (UNS N06686) for use in general corrosive service.
 
B-575   This specification covers plate, sheet and strip of low-carbon nickel-molybdenum-chromium alloys, (UNS N10276, N06022 and N06455), low-carbon nickel-chromium-molybdenum alloy (UNS N06059),and low-carbon nickel-chromium-molybdenum-tungsten alloy (UNS N06686) for use in general corrosive service.
 
B-584  Standard Specification for Copper Alloy Sand Castings for General Applications
 
B-587  This specification covers round, rectangular, and square-welded copper-alloy tube for general engineering purposes.
 
B-619   This specification covers welded pipe of nickel and nickel-colbalt alloys (UNS N10001, N10665, N12160, N10629, N10675, N10276, N06455, N06007, N06975, N08320, N06002, N06022, N06059, N06230 and N06686).
 
B-622   This specification covers seamless pipe and tube of nickel and nickel-colbalt alloys (UNS N10001, N10665, N12160, N10629, N10675, N10276, N06455, N06007, N06975, N08320, N06002, N06022, N06059, N06230 and N06686).
 
B-626   This specification covers welded tube of nickel and nickel-colbalt alloys (UNS N10001, N10665, N12160, N10629, N10675, N10276, N06455, N06007, N06975, N08320, N06002, N06022, N06059, N06230 and N06686).
 
B-729  This specification covers UNS N08020, UNS N08026 and  UNS N08024 seamless, cold-worked pipe and tube intended for general corrosive service.
 

B834

Standard Specification for Pressure Consolidated Powder Metallurgy Iron-Nickel- Chromium-Molybdenum (UNS N08367) and Nickel- Chromiiim-molybdenumColumbium (Nb) (UNS N06625) Alloy Pipe Flanges, Fittings, Valves, and Parts

D429

Test Methods for Rubber Property-Adhesion to Rigid Substrates.

D1784

Standard Specification for Rigid Poly (Vinyl Chloride) (PVC) Compounds and Chlorinated Poly (Vinyl Chloride) (CPVC) Compounds

 
 

 

D1785

PVC SCHED. 40 & 80 PIPE SPECS.

 

D2464

PVC SCHED. 80 THREADED FITTINGs

 

D2466

PVC SCHED. 40 SOCKET SPECS.

 

D2467

PVC SCHED. 80 SOCKET SPECS.

 

D2564

PVC SOLVENT CEMENTS

 

D2855

PVC SOLVENT CEMENTED JOINTS

 

D5500

Standard Test Method for Vehicle Evaluation of Unleaded Automative Spark-ignition Engine Fuel for Intake Valve Deposit Formation

 

F-439

CPVC SCHED. 80 SOCKET FITTINGS

 

F-441

CPVC SCHED. 80 PIPE SPECIFICATIONS

 

F-493

CPVC SOLVENT CEMENTS

F885

Standard Specification for Envelope Dimensions for Bronze Globe Valves NPS 1/4 to 2 El-1996 R(1996)

F992

Standard Specification for Valve Label Plates El-1997 R(1997)

F993

Standard Specification for Valve Locking Devices El-1997 R(1997)

F1020

Standard Specification for Line-Blind Valves for marine Applications El-1996 RI'1996)

F1098

Standard Specification for Envelope Dimensions for Butterfly Valves - NPS 2 to 24 EI-1993 R(1993)

F1271

Standard Specification for Spill Valves for Use in Marine Tank Liquid Overpressure Protections Applications EI-1995 R (1995)

F1370

Standard Specification for Pressure-Eeducing valves for Water Systems, Shipboard

F1508

Standard Specification for Angle Style, Pressure Relief Valves for Steam, Gas, and Liquid Services

F1565

Standard Specification for Pressure-Reducing Valves for Steam Service

F1792

Standard Specification for Special Requirements for Valves Used in Gaseous Oxygen Service

F1793

Standard Specification for Automatic Shut-Off Valves (Also Known as Excess Flow Valves, EFV) for Air or Nitrogen Service

F1794

Standard Specification for Hand-perated, Globe-Style Valves for Gas (Except Oxygen Gas), and Hydraulic Systems

F1795

standard Specification for Pressure-Reducing Valves for Air or Nitrogen Systems

 

 

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