Check
Valves

Check Valves

A straight forward design for various applications, bubble-tight if required, following all international standards. Available in all exotic material grades.

These types of check valves are specifically designed for fast-reversing systems where backflow is a constant concern. We have a simple, in line design, which responds quickly to changes in velocity.

Key elements are; non-slam closure, metal seating, fast closing, a spring loaded disc for mounting in any orientation, low delta P and available in very short face to face dimension.

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Technical Specifications Piston & Ball

Size inch (DN)
0.5” (15) - 14”(350)
ANSI class (Lbs)
150 - 4500
DIN rating (PN)
10 - 400
API rating (psi)
3000 - 15000
API 6A - ISO 10423
Russian GOST
API 6D - ISO 14313
PED
ASME B16.34
DIN
EN 13709
NORSOK
ISO 15761 (BS1868/BS5352)
Pressure
Vacuum to 765 Bar(g)
Temperature
-196°C to 850°C
Piston type
Bolted cover
Pressure seal cover
Welded cover
Loose plug type disc, spring or pressure loaded
Loose ball type disc, spring or pressure loaded
Integral
Renewable, Metal to metal
Soft
Ball type
Plug type
Flat type
Solid type
Stellited
Kolsterised®
API 598
API 6A - ISO 10423
API 6D - ISO 14313
ISO 5208
EN12266 part 1/2
Flanged RF or RTJ or FF
Butt weld
Socket weld
Threaded NPT, BSP, API, Male or Female
Hubbed ends
SAE Flanges
Compact Flanges
Client Specification

Technical Specifications Swing

Sizes inch (DN)
1/2” (15) - 56” (1400)
ANSI Class (LBS)
150 - 4500
DIN rating (PN)
10 - 400
API rating (PSI)
3000 - 15000*
API 6A - ISO 10423
ISO 15761 (BS1868/BS5352)
API 6D - ISO 14313
Russian GOST
API 594
NORSOK
ASME B16.34
Manufacturers standard
DIN
P.E.D.
EN 13709
Pressure
Vacuum to 1379 Bar(g)
Temperature
-196°C to 850°C
Single type, spring or pressure loaded
Dual type, retainerless, spring loaded
External lever
Tilting, retainerless
Plates, flat type
Integral
Renewable
Soft
Metal to metal
Tungsten carbide coated
Kolsterised®
Stellited disc and/or seats
API 598
API 6A - ISO 10423
API 6D - ISO 14313
ISO 5208
EN12266 part 1/2
Flanged RF or RTJ or FF
Butt weld
Threaded NPT, BSP, API, Male or Female
Hubbed or mechanical ends
SAE Flanges
Compact Flanges
Client Specification
Double Flanged
Pom-c
PTFE Virgin or Reinforced
Peek
PCTFE
Devlon
NBR
Nylon

Technical Specifications Non Slam Axial

Sizes inch (DN)
1/2” (15) - 30” (750)
ANSI Class (LBS)
150 - 4500
DIN rating (PN)
10 - 400
API rating (PSI)
3000 - 15000*
API 6A - ISO 10423
NORSOK
API 6D - ISO 14313
Russian GOST
ASME B16.34
Manufacturers standard
DIN
P.E.D.
ISO 15761 (BS1868/BS5352)
Pressure
Vacuum to 1034 Bar(g)
Temperature
-196°C to 850°C
One piece body
Two Piece body
Renewable diffuser
Piston disc & spring loaded
Ball disc & spring loaded
Flat disc & spring loaded
Integral
Renewable
Ball type
Plug type
Flat face
Stellited
Kolsterised®
Tungsten carbide coated
API 598
API 6A - ISO 10423
API 6D - ISO 10323
ISO 5208
EN12266 part 1/2
Client specification
Flanged RF or RTJ or FF
Butt weld
Socket weld
Threaded NPT, BSP, API, Male or Female
Hubbed or mechanical ends
SAE Flanges
Compact Flanges
Client Specification

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