Check Valve Manufacturer in Canada

Check valves are manufactured for automatic backflow prevention in pipeline, process, and utility systems where reverse flow can damage pumps, compressors, and downstream equipment. As a Check Valve Manufacturer in Canada, valves are supplied in swing, dual plate, lift, wafer, pressure seal, and non-slam configurations for systems requiring dependable non-return operation, low pressure drop, and stable sealing performance under varying flow conditions.

What is a Check Valve?

A check valve is an automatic non-return valve designed to allow flow in one direction while preventing reverse flow within the system. It operates through pressure differential without external actuation.

How Check Valves Work

Check valves open automatically during forward flow and close when flow reverses.

• Forward flow moves the disc or plate away from the seat
• Reverse flow forces the disc back into the closed position
• Closure prevents back pressure and reverse flow damage
• Operation occurs automatically without manual control

Types of Check Valves

Check valve selection depends on flow characteristics, pressure conditions, installation space, and response requirements:

• Swing Check Valve: Hinged disc design suitable for low-pressure drop applications
• Dual Plate Check Valve: Compact wafer-style design with fast closing action
• Single Plate Wafer Check Valve: Lightweight configuration for compact pipeline systems
• Lift Check Valve: Vertical lift design used in controlled high-pressure service
• Non Slam Swing Check Valve: Designed to reduce water hammer and reverse flow impact
• Pressure Seal Swing Check Valve: Used in high-pressure and high-temperature systems with pressure-assisted sealing construction
• Tilting Disc Check Valve: Faster response design with reduced flow reversal
• Forged Steel Swing Check Valve: Compact forged construction for high-pressure industrial service

Check Valve Specifications and Features

• Automatic non-return operation
• Prevention of reverse flow and back pressure
• Low pressure drop across the valve
• Fast closure response in non-slam designs
• Suitable for horizontal and vertical installations

Technical Specifications

• Size Range: ½” to 48”
• Pressure Class: Class 150 to Class 2500
• Temperature Range: -29°C to 650°C
• End Connections: Flanged, Butt Weld, Socket Weld
• Operation: Automatic

How Check Valves Are Selected

Selection depends on operating conditions and system requirements:

• Flow velocity and pressure conditions
• Risk of water hammer
• Installation orientation
• Pressure drop limitations
• Media characteristics and temperature
• Pipeline size and closure response requirements

Proper selection helps maintain stable closure performance and equipment protection.

Check Valve Material Selection

Check Valve Design Standards

• API 594
• API 6D
• ASME B16.34
• BS 1868
• MSS SP-125

Check Valve Inspection and Testing

• API 598
• Hydrostatic shell testing
• Seat leakage testing
• Functional closure testing
• Inspection of sealing performance

Industries Served

• Oil and gas processing
• Power generation
• Water treatment and distribution
• Petrochemical and refinery systems
• Marine and offshore operations
• Mining and industrial processing

Special Features of Check Valves

• Automatic operation without external actuation
• Compact wafer and dual plate configurations
• Reduced water hammer in non-slam designs
• Suitable for high-pressure and high-temperature service
• Low pressure drop characteristics
• Fast response closure performance