Non Slam Swing Check Valve Manufacturer in Canada  

Technical Highlights:

• Nominal Size: 2″ to 48″
• Pressure Class: Class 150 to Class 2500
• Temperature Range: -29°C to +425°C
• Design Standards: API 6D, ASME B16.34
• Face to Face: ASME B16.10
• Inspection and Testing: API 598, ISO 5208
• Construction Type: Non Slam Swing Check, Tilting Disc Assisted Closure, Bolted Cover

Valve Construction Features:

Primary Pressure Components:

• ASTM A216 WCB
• ASTM A352 LCB / LCC
• ASTM A351 CF8 / CF8M / CF3M
• ASTM A995 Grade 4A
• ASTM A995 Grade 5A
• ASTM A995 Grade 6A
• ASTM A351 CN7M
• ASTM B148 C95800

Flow Control Components:

• Disc: Stainless Steel / Duplex Stainless Steel
• Hinge Arm: Stainless Steel
• Shaft: ASTM A182 F304 / F316
• Counterweight (Optional): Carbon Steel / Stainless Steel
• Dashpot (Optional): Hydraulic Assisted Closing Device

Leak Tight Sealing System:

• Seat: Metal Seated / Renewable Seat Ring
• Seat Overlay: Stellite Hard Faced
• Body Gasket: Spiral Wound Stainless Steel with Graphite Filler
• Stem Seal: Graphite Packing

Flow Control Mechanism:

Non Slam Swing Check Valve is engineered to eliminate reverse flow and minimize water hammer in high-pressure piping systems. Unlike conventional swing check valves, the disc is designed to close rapidly before flow reversal occurs through a spring-assisted or hydraulically damped mechanism. This controlled closing action reduces pressure surges, vibration, and impact loading on the valve and connected equipment. The streamlined flow path provides low pressure loss during operation while protecting pumps, compressors, turbines, and critical process piping from damage caused by backflow. The robust construction makes the valve suitable for demanding oil and gas, power generation, petrochemical, marine, and water transmission applications.

Non Slam Swing Check Valve Applications Across Industries:

• Oil and gas industry: Preventing reverse flow in production facilities, compressor stations, and transmission pipelines.
• Petrochemical plants: Protecting pumps and critical process equipment from backflow and pressure surges.
• Oil refineries: Reliable non-slam operation in hydrocarbon processing and utility services.
• Power generation plants: Minimizing water hammer in steam, condensate, cooling water, and boiler feed systems.
• Pipeline transmission: Ensuring one-way flow in long-distance oil, gas, and utility pipeline networks.
• Marine and offshore: Providing dependable backflow protection in seawater, ballast, and process piping systems.
• Water treatment plants: Preventing reverse flow in potable water, wastewater, and pumping stations.
• Desalination plants: Protecting high-pressure pumps and membrane systems from flow reversal.
• Chemical processing plants: Handling corrosive process fluids while reducing pressure shocks in piping systems.
• Mining industry: Backflow prevention in slurry, mineral processing, and industrial water distribution systems.

Non Slam Swing Check Valve Material Specifications:

Standard Construction Materials:

Component	Material	Grade	Typical Application
Body	Carbon Steel	ASTM A216 WCB	Oil and gas pipelines
Body	Low Temperature Carbon Steel	ASTM A352 LCB / LCC	Low temperature process systems
Body	Stainless Steel	ASTM A351 CF8 / CF8M / CF3M	Corrosive process media
Body	Duplex Stainless Steel	ASTM A995 Grade 4A / ASTM A890 F51	Offshore and seawater service
Body	Super Duplex Stainless Steel	ASTM A995 Grade 5A / 6A	High chloride environments
Body	Alloy 20	ASTM A351 CN7M	Acidic chemical applications
Body	Aluminium Bronze	ASTM B148 C95800	Marine and seawater service
Disc	Stainless Steel	ASTM A351 CF8M	Backflow prevention and flow control
Shaft	Stainless Steel	ASTM A182 F304 / F316	Corrosion resistance and smooth operation
Seat Ring	Stainless Steel with Stellite Overlay	Hard Faced	Wear resistance and tight shut-off

Special Material Options:

• Hastelloy C276 for aggressive chemical processing
• Inconel 625 / 718 for high-temperature and severe service
• Monel 400 for saltwater and marine applications
• Titanium Grade 2 / Grade 5 for seawater and offshore systems

Non Slam Swing Check Valve Specifications:

Parameter	Specification
Valve Type	Non Slam Swing Check Valve
Operation	Automatic
Disc Design	Swing Disc with Assisted Closing
Closing Mechanism	Spring Assisted / Hydraulic Dashpot
Flow Direction	Unidirectional
Leakage Control	Metal Seated
Installation	Horizontal or Vertical (Upward Flow)
Service Media	Water, Steam, Oil, Gas, Chemicals and Hydrocarbon Fluids

Connection Configurations:

• Raised Face (RF) as per ASME B16.5
• Ring Type Joint (RTJ) as per ASME B16.5
• Butt Weld (BW) as per ASME B16.25
• Custom end connections available to project specifications