Dual Plate Wafer & Lug Check Valve
Engineered for rapid, slam-free reverse flow prevention in pump discharge and compressor manifolds. Features an advanced retainerless one-piece body that eliminates through-wall pin holes, twin torsion spring-assisted dynamic closure to prevent water hammer surges, and resilient or hardfaced seating.
Design Codes & Valve Construction Standards
Complies with API 594 and ASME B16.34, providing ultra-compact face-to-face dimensions (80% lighter and 75% shorter than traditional swing check valves).
| Engineering Parameter | Applicable Codes, Standards & Design Criteria |
|---|---|
| Design & Manufacturing Standard | API 594, ASME B16.34, BS 1868 (Swing option), EN 12334 |
| Face-to-Face Dimensions | API 594, ASME B16.10, ISO 5752 Series 16 / Series 73 |
| Flanged End Connections | ASME B16.5 RF / RTJ, ASME B16.47 Series A / B, EN 1092-1 |
| Body Configuration | Wafer (compact clamp-on), Full Lugged, Double Flanged (for large diameter or buried duty) |
| Retainerless Construction | Hinge and stop pins secured internally by blind retainers; zero external hole penetrations |
| Spring Assisted Closure | Inconel X-750 or Hastelloy C dual torsion springs for high-cycle non-slam dynamic closure |
| Seating Interface | Resilient O-ring (NBR / Viton / EPDM / PTFE) or Metal-to-Metal Hardfaced (Stellite 6) |
| Sour Service Compliance | NACE MR0175 / ISO 15156 compliant materials for wet H2S oil/gas transmission |
| Inspection & Testing | 100% factory hydrostatic shell and low/high pressure seat leak testing per API 598 |
Critical Architecture of TSV Dual Plate Check Valves
Engineered specifically to solve water hammer pipe ruptures and fugitive emissions in severe pipeline networks.
Retainerless Body Design
Traditional check valves drill through the body shell to mount hinge pins, creating potential fugitive leak paths. TSV utilizes blind internal pockets, completely eliminating external body penetrations.
Non-Slam Torsion Springs
High-tensile Inconel X-750 dual torsion springs urge the two semi-circular plates closed before fluid reversal occurs, totally eradicating destructive water hammer pressure shocks.
Independent Plate Action
Each semi-circular disc rotates independently on the central hinge pin, distributing inertial load evenly and providing smooth, stable response under pulsating compressor or pump discharges.
80% Weight Reduction
Wafer-style body fits snugly between companion pipe flanges, reducing valve weight by up to 80% compared to bulky swing check valves, drastically simplifying offshore platform engineering.
Horizontal & Vertical Mount
Because plate closing is spring-energized rather than gravity-dependent, TSV dual plate check valves operate reliably in horizontal pipes or vertical lines with upward flow direction.
Hardfaced Seat Longevity
Body and disc sealing surfaces are precision ground with Stellite 6 overlay (or vulcanized resilient rubber for water), preventing seat scrubbing and wire-drawing under high velocity slurry flows.
Complete Dual Plate Check Valve Models & Technical Capabilities
Browse TSV's complete portfolio of certified dual plate check valve models. Engineered to order with customizable trims, metallurgy, pressure ratings, and factory-fitted actuation for mission-critical installations.
Dual-Plate Spring-Loaded Non-Slam Wafer Check Valve
Twin D-shaped semi-circular plates loaded by torsion springs close before flow reversal occurs, eliminating pipeline water hammer slam shockwaves.
High-Pressure Forged Dual-Plate RTJ Retainerless Check Valve
Retainerless design with no external body drillings or plugs, completely eliminating fugitive emissions for high-pressure sour gas transmission.
Stainless Steel Cast Dual Plate Chemical Wafer Valve
Full investment cast CF8M austenitic stainless body and trim providing superior resistance to caustic soda, acids, and brine fluids.
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.
Current Series View Page Top ↑Flanged Swing Check Valve
Heavy bolted cover swing check valve providing full unobstructed bore for low pressure drop.
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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 →Configure & Request a Quote for Dual Plate Check Valves
Submit your pump flow rate, line orientation, and operating medium. TSV application engineers will check dynamic cracking pressure and provide CAD drawings within 24 hours.