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ASTM B622 Ball Valve and UNS N08031 Check Valve manufacturer in India

Alloy 31 Valves are made up of an iron nickel chromium molybdenum alloy that has nitrogen for stabilization. The specific composition provides the material with corrosion resistance and erosion resistance which are useful for valve operation. This material is specifically corrosion resistant to phosphoric acids. The DIN 1.4562 ball valve is used in bleaching plants and in paper and pulp industry due to the extended corrosion resistance of the material. The valves come under ASTM B622 and have sizes ranging from 2 inches to 24 inches. There are custom made sizes available as well.

Alloy 31 Valves

Alloy 31 Valves

ASTM B622 Ball Valve

ASTM B622 Ball Valve

UNS N08031 Check Valve

UNS N08031 Check Valve

Alloy 31 Trunnion Ball Valve Suppliers In India, DIN 1.4562 Gate valve Manufacturer

The different types of valves include the UNS N08031 gate valve and others. The gate valves are mostly operated manually where automated valves also exist. The gate valve has a gate that opens and closes a valve. These can be bidirectional valves allowing the fluid flow in both directions. When the valve needs to regulate the flow in only one direction, the ASTM B622 Alloy 31 check valves are used.


What is Alloy 31 Valves?

These valves have a mechanism to direct the flow only in one direction. This way, the application remains stable. When the pressure drops and the fluid attempts to fall back, the valve closes blocking the backflow. The Alloy 31 plug valves are another type which use plugs instead of balls or gates. The plugs are seated in the seating while in the closed position. The plug is lifted off when the valve needs to open.

Specification of UNS N08031 Valve

Material Alloy 31
Seal Material PTFE/ RPTFE
Working Pressure 1.6 – 6.4Mpa
Working Temperature

-29°C — +180°C

Availabe Size 1/2″-4″,(DN15-DN100)
Available Connection BSP/ BSPT/ NPT/ Flanged/ Welded
Nominal Pressure P10/PN16
Operation Manual,Pneumatic, Electric
Suitable Medium Water,Sewage,Seawater,Gas,Food,Oils,etc
Standards GB9112,DIN2501,BS4504,ISO2084,ANSI125
Applications Water, Oil, Gas,
Nominal Diameter

DN40-DN300 handle lever
DN350-DN1200 gear box

Operation Temperature -10°C~150°C

DIN 1.4562 Chemical Properties


Mechanical Properties of Alloy 31 valves

DensityMelting RangePermeabilityElectrical Resistivity

Physical Properties of WNR 1.4562 Valve

Tensile Strength, min.Yield Strength, min.Elongation, min.Hardness, min

Check ASTM B622 UNS N08031 Needle Valves Dimensions, Refer Pressure Rating of DIN 1.4562 Plug Valves

Alloy 31 material specification and equivalents

ASTM specification B622
European (DIN) Werkstoff number 1.4562
Unified Numbering System (UNS) N08031
Type X1NiCrMoCu32-38-7

Ready Stock of Werkstoff 1.4562 Valve

Werkstoff 1.4562 Gate Valve ASTM B622 UNS N08031 Needle Valve
DIN 1.4562 Globe Valve en 31 alloy steel Pinch Valve
ASTM B622 UNS N08031 Ball Valve Alloy 31 Reducing Valve
en 31 alloy steel Butterfly Valve DIN 1.4562 Diaphragm Valve
UNS N08031 Plug Valve Werkstoff 1.4562 Trunnion Ball Valve
Cupro Alloy 31 Swing Check Valve Alloy 31  Y Type Control Valve
UNS N08031 Cryogenic Valve Cupro Alloy 31 Angle Control Valve

Alloy 31 Valve Types

Alloy 31 Trunnion Ball Valve

Alloy 31 Trunnion Ball Valve

ASTM B622 UNS N08031 Needle Valves

ASTM B622 UNS N08031 Needle Valve

DIN 1.4562 Plug Valves

DIN 1.4562 Plug Valve

UNS N08031 Swing Check Valves

UNS N08031 Swing Check Valve

EN 31 alloy steel Butterfly Valves

EN 31 alloy steel Butterfly Valve

Werkstoff 1.4562 Cryogenic Valves

Werkstoff 1.4562 Cryogenic Valve

Standard Specification of Alloy 31 Butterfly Valve

Valve Design EN 593 (BS 5155), API 609 Cat A, MSS SP-67
End Connection Wafer Flangeless, Lugged (EN 1092), ASME B16.42 & ASME B16.5 Class150, BS 4504 PN 10/16, ASME B 16.47 Series A & B, AWWA C 207 Class E
Face-to-Face EN 558 Series 20 (For 350mm - EN 558 series 25), API 609 Cat A, MSS SP-67 (Narrow Body), ISO 5752 (Short)
Pressure Testing EN 12266 Part 1&2, API 598, ISO 5208

Available Standards of UNS N08031 Butterfly Valve

Specification ASTM B622 & ASME SB622
Ask for Price list of UNS N08031 Swing Check Valves, Stockholder of Werkstoff 1.4562 Cryogenic Valve

Scope Of Application of DIN 1.4562 valve

  • Chemical Industry
  • Construction
  • Fertilizers Industry
  • Petrochemical
  • Power Industry
  • Oil & Gas Industry

Construction of Material of Alloy 31 Butterfly Valve

Body  SG Iron EN 1563-400/ 18, Carbon Steel A 216 Gr. WCB
Seat/ Liner Nitrile Rubber, EPDM
Disc SG Iron EN 1563-400/ 18 with Nylon-coating, Stainless Steel A351 CF8, CF8M to A 351, CF3M, AB2
Shaft ASTM A479 Type 410 with Xylan® Coating, 17-4 Ph
Bearing Acetal, PTFE, Phosphor Bronze

Size Range of DIN 1.4562 Globe Valve

  • As per API 600 for size up to 24" NB
  • As per BS 1414 for size above 24" NB

UNS N08031 Globe Valves Features

  • Higher strength leading to weight saving
  • greater corrosion resistance
  • stress corrosion cracking
Ready Stock of EN 31 alloy steel Butterfly Valves, Distributor of Alloy 31 knife gate Valve

Standards of Cupro Alloy 31 Pessure Seal Valve

Design standard ASME B 16.34
Testing standard API 598/ BSEN 12266 PART-1/MSS-SP-61
face to face dimensions forbutt weld & flanged valves ASME B 16.10
flanged design ASME B 16.5
Butt -weld design ASME B 16.25
pressure- temp rating ASME B 16.34