Flanged Swing & Tilting Disc Check Valve
Heavy-duty flanged non-return valves manufactured to API 6D and BS 1868. Designed for full fluid passage with low head loss, balanced swing hinge assemblies, and optional external counterweights or oil dashpots to eliminate slamming during pump trip events.
Design Criteria & Manufacturing Specifications
Manufactured strictly to international engineering codes with 100% factory pressure testing, full EN 10204 3.1 / 3.2 material traceability, and accredited third-party witness support.
| Engineering Parameter | Applicable Codes, Standards & Design Criteria |
|---|---|
| Design Standard | API 6D, BS 1868, ASME B16.34 |
| Seat Design | Heavy Stellite Gr.6 welded overlay on body and disc rings |
| Dampening Device | Optional hydraulic counterweight dashpot for non-slam protection |
Flanged Check Valve Standard & Engineered Models
TSV manufactures an engineered lineup of Flanged Check Valve configurations for global oil & gas transmission pipelines, refinery manifolds, power plants, and severe industrial processes. Each unit undergoes 100% hydrostatic and pneumatic factory acceptance testing before dispatch.
API 6D Full-Bore Piggable Flanged Swing Check Valve
Full circular waterway design allows unrestricted passage of pipeline scrapers, pigs, and intelligent inspection tools with minimal pressure loss.
Tilting Disc Non-Slam Rapid Close Flanged Check Valve
Pivot axis located eccentric to the disc centerline reduces travel arc by 60%, delivering ultra-fast closing with hydraulic damping cylinder.
Forged Steel High-Pressure Flanged Piston Lift Check Valve
Piston disc guided in precision machined dashpot chamber cushions seating impact under severe pulsating flow from reciprocating compressors.
Cast Steel Bolted Cover Swing Check Valve
Standard industrial refinery swing check valve with internally mounted hinge pin preventing external bonnet wall penetrations and leaks.
Low Temperature Cryogenic Flanged Swing Check Valve
Austenitic stainless steel casting impact tested at -196°C for liquefied natural gas (LNG) terminals and ethylene cryogenic carrier pipelines.
Axial Flow Nozzle Non-Slam High-Speed Dynamic Check Valve
Venturi shaped nozzle body with center-guided disc and internal spring responds within 0.15 seconds to reverse flow deceleration.
Balanced Disc Hydrodynamics & Gravity-Assisted Rapid Closure
Contoured swing disc profiles minimize pipeline pressure drop during forward flow and provide instantaneous gravity-assisted seating before flow reversal.
100% Hydrostatic Acceptance
Every valve is pressure-tested per API 598 / API 6D Rate A with zero allowable bubble leakage prior to factory crating.
EN 10204 3.1 Certified
Certified Mill Test Reports (MTR) with optical emission spectrometer chemical composition and mechanical impact values.
Global OXY Approved Supplier
Audited and approved on the global master vendor list (#24) of Occidental Petroleum for severe upstream duties.
Explore All 5 Check Valve Sub-Categories
1:1 aligned with TSV factory catalog. Engineered non-return valves preventing backflow and water hammer in industrial piping.
Dual Plate Check Valve
API 594 compact wafer design with spring-loaded dual plates for rapid non-slam closure.
API 594 Non-Slam View Dual Plate Check Valve →Flanged Swing Check Valve
Heavy bolted cover swing check valve providing full unobstructed bore for low pressure drop.
Current Series View Page Top ↑Single Disc Wafer Check Valve
Ultra-thin short pattern wafer check valve easily sandwiched between ASME B16.5 flanges.
Short Pattern View Single Disc Wafer Check Valve →Forged Piston / Ball Check Valve
Class 800 - 2500 high-pressure forged piston lift check valve for boiler feed and pump discharge.
Class 800 - 2500 View Forged Piston / Ball Check Valve →Threaded & Socket Weld Check Valve
High-integrity threaded NPT/BSPT and socket weld check valves for chemical dosing skids and power packs.
Thread / SW View Threaded & Socket Weld Check Valve →Request Engineering Submittal & Commercial Quotation
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