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Welded Cover Non Return Valve (Forged Steel)

A welded non-return valve made of forged steel is a durable and efficient valve designed to allow unidirectional fluid flow while preventing backflow in high-pressure and high-temperature systems. The welded bonnet construction ensures a permanent, leak-proof seal between the valve body and bonnet, making it suitable for critical applications where reliability and safety are paramount. The forged steel body enhances the valve’s strength, durability, and resistance to wear, enabling it to perform effectively in demanding environments. This valve operates automatically, closing to prevent reverse flow and protecting equipment from damage. It is widely used in industries such as oil and gas, petrochemical, and power generation, where robust and leak-proof valves are essential for system integrity.

Details

Specifications

Design std API602 / ASME B16.34
Size ½” TO 2″
Class 800# TO 4500#
Body & Bonnet Material A105, LF2, F11, F22, F304, F316, ETC.
Face to Face AS PER MFG STD
End Connection S/W ANSI B16.11. BUTTWELD ANSI B16.25, SCREW ENDS ANSI B1.20.1

STANDARD MATERIAL COMBINATION

P. NO. PART DESCRIPTION Carbon Steel to ASTM Alloy Steel to ASTM Stainless Steel to ASTM
Type 105 Type LF2 Type F5 Type F11 Type F22 Type F9 Type F304 Type F316 Type F304L Type F316L
1 BODY A105 A350
LF2
A182
F5
A182
F11
A182
F22
A182
F9
A182
F304
A182
F316
A182
F304L
A182
F316L
2 SEAT RING A276
SS 410
A276
SS 304
A276
SS 410
A276
SS 410
A276
SS 410
A276
SS 410
SS 304 SS 316 SS 304L SS 316L
3 DISC CA15 /
SS 410
A276 /
SS 304
CA15 /
SS 410
CA15 /
SS 410
CA15 /
SS 410
CA15 /
SS 410
SS 304 SS 316 SS 304L SS 316L
4 COVER A105 A350
LF2
A182
F5
A182
F11
A182
F22
A182
F9
A182
F304
A182
F316
A182
F304L
A182
F316L
NOTES : The above data is subject to change without any notice due to our continuing product improvement Program.