CHECK VALVES
A check valve is a widely used device in fluid control systems designed for preventing backflow of liquids or gases through a pipe. It operates by allowing flow in one direction while automatically closing to stop flow in the opposite direction. Check valves are ideal for applications requiring reliable prevention of reverse flow or protection of equipment such as pumps and compressors. They provide excellent sealing capabilities and are particularly effective in situations where maintaining unidirectional flow is essential.
Check valves are a crucial component in many systems due to their simplicity and efficiency, serving as an optimal solution for safeguarding fluid dynamics in pipelines. Commonly found in industries such as water supply, oil and gas, chemical processes, and power generation, check valves are essential for ensuring the integrity of flow direction securely.
PR-FECT VALVES manufactures check valves in a wide range of sizes, materials, and pressure ratings, ensuring compatibility with diverse industrial applications and offering advanced technical features such as precision-machined components and corrosion-resistant coatings for enhanced performance and durability.
| SL. NO. | CHECK VALVE TYPES |
| 1 | SWING CHECK VALVE |
| 2 | DUAL PLATE CHECK VALVE |
| 3 | TILTING DISC / FLAP CHECK VALVE |
| 4 | LIFT / PISTON CHECK VALVE |
| 5 | IN-LINE (POPPET-STYLE) CHECK VALVE |
| 6 | NON SLAM CHECK VALVE |
| 7 | AIR VENT CHECK VALVE |
| 8 | DUCKBILL CHECK VALVE |
| 9 | DUCT CHECK VALVE |
| 10 | FABRICATED CHECK VALVE |
| 11 | ANGLE CHECK VALVE |
| 12 | AXIAL FLOW CHECK VALVE |
| 13 | AXIAL FLOW NON-SLAM CHECK VALVE |
| 14 | BALL CHECK VALVE |
| 15 | DART CHECK VALVE |
| 16 | JACKETED SWING CHECK VALVE |
| 17 | LINED CHECK VALVE |
| 18 | MULTI DOOR CHECK VALVE |
| 19 | NOZZLE CHECK VALVE |
| 20 | PRESSURE SEAL Y-TYPE PISTON / LIFT CHECK VALVE |
| 21 | TANK VENT CHECK VALVE |
| 22 | Y-PATTERN CHECK VALVE |
| 23 | BRONZE CHECK VALVE |
| 24 | HIGH TEMPERATURE CHECK VALVE |
| 25 | CRYOGENIC CHECK VALVE |
| 26 | PVC / CPVC CHECK VALVE |
| 27 | SCREW DOWN NON RETURN VALVE (GLOBE TYPE) |
| 28 | HIGH PRESSURE CHECK VALVE |
| 29 | SUBSEA CHECK VALVE |
| 30 | DAMPER CHECK VALVE |
| PRODUCT DETAILS | |
| Sizes | 1/4" to 250" |
| Pressure Class Ratings | ASME #150 to #4500 |
| Pressure Class Ratings | Asme #150 to #2500 |
| End Connection | Screwed, Socket Weld, Flanged, Butt-Weld |
| Construction Types | Swing, Bolted Cover |
| Salient Features | Pressure Seal, Fugitive Emissions, Metal Seats, Internal Hinge, Damper Arrangements, Jacketed etc. |
| STANDARDS SPECIFICATIONS | |
| Design & Manufacture | API 6D, ASME B16.34, BS 1868 |
| Face To Face | ASME B16.10, MFG Standard |
| End Connections | ASME B16.11, ISO 7-1, BS 21 ASME B1.20.1, ASME B16.5/ B16.47 RF/FF/RTJ ASME 16.25, EN 1092 |
| Testing | API6D, API 598, ASME B16.34 |
| Nace | NACE MR0175 / ISO 15156 and NACE MR0103 / ISO17945 |
| MATERIAL OF CONSTRUCTION | |
| Body / Top Cover | Carbon & Low Carbon Steel, Stainless Steel, Nickel alloys, High Temp Alloys, Duplex Stainless Steel, Exotic Materials |
| Trim | Stainless Steel, Nickel alloys, Duplex Stainless Steel, Exotic Materials |
| Seat | Soft Seats, HF-Metal to Metal Seats, others upon request |
| Gaskets | PTFE/ RPTFE/ Special filled PTFE/Graphite/Graphoil/Spiral Wounded |
| Fasteners | ASTM A193 Gr.B7/A194 Gr.2H, B7M/2HM, B8/8, B8M/8M, L7/4, B16/2H etc., |
Note : For Bigger sizes please contact PR-Fect Valves