Engineered for critical fluid control applications, our Lift-Type Non-Return Valve offers a heavy-duty industrial solution designed for high reliability and safety.
Constructed from premium Cast Carbon Steel (ASTM A216 Gr. WCB) and fitted with renewable S.S. 410 (13% Cr.) working components, this valve ensures dependable backflow prevention, robust pressure containment, and extended service life across demanding industrial systems.
Technical Details
- Manufacturing Std:Â BS: 1873 / BS 5352
- Testing & Inspection Std:Â API: 598
- Face to Face:Â ANSI B 16.10 / DIN ND-16/ND-40
- End Connection: Flanged AS PER ANSI B 16.5/DIN 2533/2543/2535/2545/BS 1560
- Socket Weld And Threaded To:Â ANSI B 16.11/ ANSI B 1.20.1
- Butt Weld Ends:Â ANSI B 16.25
- Shell wall Thickness:Â ANSI B 16.34
Here is the updated specification document with all specific manufacturer branding removed, written generically for your catalog or website.
Technical Specifications
- Body Material: Cast Carbon Steel (ASTM A216 Grade WCB)
- Trim / Internal Parts: Renewable Stainless Steel 410 (13% Chromium)
- Bonnet Construction: Bolted Bonnet
- Pressure Ratings: ND-40 / Class 150 / Class 300 / Class 800
- End Connections: Flanged Ends, Butt Weld Ends, Screwed Ends (NPT / BSPT), Socket Weld Ends
Operating Principle & Applications
A Non-Return Valve (NRV)—commonly known as a Check Valve—is a unidirectional flow control device that allows line media to travel in a single direction while automatically preventing reverse flow.
In a Lift-Type Mechanism, the internal guided disc or piston moves vertically relative to the seat. Forward fluid velocity lifts the disc away from the renewable S.S. 410 seat to allow passage. When flow decreases or reverses, line backpressure and gravity immediately push the disc back down onto the seat, creating a precise, leak-tight seal.
Key Applications
Designed to manage severe operating conditions, this valve is suitable for:
- Oil & Gas processing and refining lines
- Chemical & Petrochemical processing plants
- Industrial Water Supply and wastewater infrastructure
- High-Pressure Steam and power generation facilities
Key Features & Benefits
- High Temperature & Pressure Tolerance: Built with a sturdy WCB cast body rated up to Class 800 / ND-40 to perform reliably under high operational stress.
- Corrosion & Wear Resistance: S.S. 410 trim components provide excellent defense against media erosion, pitting, and oxidation.
- Bolted Bonnet Design: Facilitates straightforward inline inspection, maintenance, and seat/trim servicing without disassembling the pipeline.
- Low Noise & Anti-Slam Operation: Guided vertical disc travel provides smooth actuation, helping reduce acoustic noise and mitigate water hammer.
- Self-Cleaning Seat Surface: High fluid velocity across sealing faces prevents particle buildup, maintaining seal integrity over time.
- Flexible Piping Integration: Available in multiple connection profiles, including flanged, threaded, butt weld, and socket weld ends.
- Standard Compliance: Manufactured and tested to conform to standard global engineering specifications.
| MATERIAL SPECIFICATIONS / BILL OF MATERIALS | |||
| Cast Carbon Steel Lift-Type Non-Return Valve (ASTM A216 Gr. WCB) | |||
| Item No. | Description | Material Specification | Qty. |
| 1 | Body | Cast Steel (ASTM A216 Gr. WCB) | 1 |
| 2 | Disc | Cast Steel (ASTM A216 Gr. WCB) | 1 |
| 3 | Seat Ring | AISI 410 (13% Cr.) | 1 |
| 4 | Disc Facing / Trim | ASTM A216 Gr. WCB | 1 |
| 5 | Cover Gasket | S.S. 304 Spiral Wound Gasket with Graphoil Filler | 1 |
| 6 | Cover Stud & Nut | ASTM A193 Gr. B7 / ASTM A194 Gr. 2H | 1 Set |
| Total Items Specified | 6 | ||