Thread Check Valve
Compact high-integrity threaded non-return valves engineered for chemical dosage skids, hydraulic power packs, sampling panels, and instrumentation lines. Available in female NPT, BSPT, and G thread connections in stainless steel, carbon steel, and forged brass.
Design & Manufacturing Specification
Complete Thread Check Valve Models
Thread End NPT / BSPT Swing Check Valve
One-piece investment cast 316 stainless steel swing non-return valve for chemical processing and industrial water loops.
2-Piece Vertical Inline Spring Check Valve
Spring-loaded poppet valve mountable in any orientation (horizontal or vertical upwards) for pump discharge lines.
Brass Heavy Thread End Swing Check Valve
High-grade forged brass construction with PTFE/NBR seat for commercial building plumbing, HVAC, and low-pressure air lines.
Precision Threaded Body Sealing & High-Integrity Instrument Line Protection
NPT and BSPT threaded check valves engineered for small-bore hydraulic instrumentation and chemical injection skids.
Precision CNC Thread Gauging
All NPT, BSPT, and SAE threads are 100% verified using calibrated ring and plug gauges to ensure leak-free seal engagement without thread galling.
Low Cracking Pressure Springs
Calibrated Inconel X-750 and 316SS internal springs provide precise cracking pressures from 0.3 psi (0.02 bar) up to 25 psi for sensitive instrumentation lines.
Elastomer & Metal Seating Choices
Available with Viton, Kalrez, or precision ground metal-to-metal seating to handle severe hydrocarbons, sour gas (NACE MR0175), and aggressive chemicals.
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.
Full Bore Swing View Flanged Swing Check Valve →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.
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