Check Valves


Swing Check valves are sometimes referred to as non-return, clack, retention, reflux or one way valves. All Check valves are self-activating valves, designed to prevent back flow and are used in most cases to protect equipment, for instance pumps, product and people.  D&D International Valves Ltd stock swing check valves manufactured by  TT Valves UK Ltd. and Weflo valves.  Our Cast steel range of swing check valves includes Class 150, 300 and 600 rating, flanged suitable for corresponding flanges.  The TT Valves UK Ltd. Check valves can be modified to include outside lever and weight to assist closure of the check valve.  The Weflo Cast Iron swing check valves are available from stock, flanged PN16 and ANSI 125.  D&D International valves Ltd. can source wafer pattern check valves as required to meet your project requirements.  Please contact us today with your valve sourcing needs.

Cast Steel Check Valve Stock range - Click to Open
Design: API600, BS1868, ASMEB16.34, ANSI B16.10, API 598
Body Material: ASTM A216 Gr WCB, ASTM A352 Gr LCC
Trim: API Trim No 8, API Trim No 5, API Trim No 16
Rating: Class 150 - 2" to 16", Class 300 - 2" to 12", 2" to 6" Class 600, 2" to 6" Class 900, 2" to 6" Class 1500
Other materials and ratings available on factory lead times. Please see below.
Weflo Cast Iron Check Valve Stock range - Click to Open
Design: BS5153 (EN12334:2001), MSS SP 71, EN1092-1 PN16, ASME/ANSI 125
Body Material: Cast Iron, A126 Class B
Trim: Hinge Pin: Copper Alloy, Seats: Bronze
Rating: PN16, Class 125, Table E/D
TT Valve UK Ltd. Cast Steel Valves - Click to Open
Design: API 600, BS1414, BS1873, BS1868, API 594, ASMEB16.34, ANSI B16.10
Sizes: 2" to 36"
Ratings: Class 150, 300, 600, 1500, 2500, PN16, PN25 and PN40
Connections: Flanged, Butt Weld or Ring Type joint
Materials: Carbon steel, Low temperature carbon steel, Stainless steel, Alloy steel, Stellite and Monel
Weflo Cast Iron Valve range - Click to open
Design: BS5150, BS5152, BS5153, MSS SP 70, MSS SP 85, MSS SP71, UL and FM listed
Sizes: 2" to 36"
Ratings: Class 125, PN10 and PN16
Connections: Flanged
Materials: Cast iron, Ductile iron and Bronze