A bolted cover non-return valve made of forged steel is a durable and efficient valve designed to prevent backflow in pipelines, ensuring the unidirectional flow of fluids. The bolted bonnet construction provides a secure and leak-proof seal, while the forged steel material enhances the valve’s strength and resistance to high pressures and temperatures. This type of valve operates automatically, allowing fluid to flow in one direction and closing when reverse flow is detected, thus protecting equipment and maintaining system efficiency. Commonly used in industries such as oil and gas, petrochemical, and power generation, this valve is valued for its reliability, low maintenance, and ability to perform effectively in demanding environments.
Design std | API602 / ASME B16.34 |
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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 | GASKET | SPIRAL WOUND STAINLESS STEEL GRAPHOIL FILLER | |||||||||
5 | COVER | A105 | A350 LF2 |
A182 F5 |
A182 F11 |
A182 F22 |
A182 F9 |
A182 F304 |
A182 F316 |
A182 F304L |
A182 F316L |
6 | STUDS | A193 B7 |
A320 L7 |
A193 B7 |
A193 B7 |
A193 B16 |
A193 B16 |
A193 B8 |
A193 B8 |
A193 B8 |
A193 B8 |
7 | NUTS | A194 2H |
A194 Gr.4 |
A194 2H |
A194 Gr.4 |
A194 Gr.4 |
A194 Gr.4 |
A194 Gr.8 |
A194 Gr.8 |
A194 Gr.8 |
A194 Gr.8 |
NOTES : The above data is subject to change without any notice due to our continuing product improvement Program. |