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.
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 |
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. |