End connection: Screwed Cap and Female Threaded(Inside Threaded) BSPT BSP NPT , DIN259/2999,ISO 228
Quality control: 1. All raw material blanks enter the factory for PMI test and size measurement; 2. Check all accessories and threads in the production process; 3. Water pressure test after ball valve assembly to ensure sealing performance; 4. Final inspection of all details of dimension thread after marking; Each production process, we have the corresponding QC personnel to inspect;
The LIANHE Stainless Steel Threaded Check Valve automatically prevents reverse flow in compatible water, oil, gas, and industrial piping systems.
Its investment-cast stainless steel body provides corrosion resistance and mechanical strength, while precision-machined connections support reliable installation.
Technical Specifications
Size Range: 1/4"–4" (DN8–DN100), Full Bore
Available Types:
Vertical Check Valve
Horizontal Check Valve
Swing Check Valve
Wafer Check Valve
Connection Options:
Female Thread: BSPT, BSP, NPT, DIN 259/2999, and ISO 228
Wafer Connection for applicable models
Manufacturing Process: Investment Casting and Precision CNC Machining
Working Pressure: Up to 200 PSI
Operating Principle: Automatic, activated by flow direction and pressure difference
Available Materials: CF8, CF8M, SS304, and SS316
Structural Features: Swing-Type Disc and Integral Seat for applicable models
Applicable Media: Water, oil, gas, and other compatible fluids
Packaging: Plastic Bags, Export Cartons, Wooden Cases, or Pallets
Certificates: ISO 9001:2015, GB/T 19001-2016, and CE documentation for applicable products
Brand: LIANHE
HS Code: 8421211000
Place of Origin: Wenzhou, Zhejiang, China
Product Advantages
Automatically prevents reverse flow
Good corrosion resistance
Compact and simple construction
Convenient installation and maintenance
Reliable sealing when correctly selected and installed
Long service life under suitable conditions
Multiple structures and connection options available
Applications
Suitable for compatible applications in:
Construction piping systems
Refrigeration equipment
Fuel-gas systems
Food and medical equipment
Chemical-processing facilities
Environmental protection equipment
Water-treatment systems
The installation direction, opening pressure, material, connection type, working pressure, temperature, and medium compatibility should be confirmed before ordering.
Inspection Documents
Available documents include:
EN 10204 3.1 Material Test Certificate
Raw-Material Inspection Certificate
Hydraulic Test Report
Thread Inspection Report for threaded models
Radiographic Testing Report, when applicable
Third-Party Inspection Report
Commercial Terms
Payment Terms: 30% deposit and 70% balance before delivery. L/C at sight, T/T, Western Union, PayPal, and other agreed methods are available.
Free Samples: Available for selected standard products; express charges are normally paid by the recipient.
Manufacturer: LIANHE Place of Origin: Wenzhou, Zhejiang, China
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