Pilot Operated Safety Valve Manufacturer in Canada

Maintaining precise overpressure protection is essential in high-pressure industrial systems. Pilot operated safety valves provide accurate pressure control, higher set pressure stability, and tight sealing under normal operating conditions. ValvesOnly Canada is a top Pilot Operated Safety Valve Manufacturer in Canada, offering high-pressure gas safety valve solutions in Toronto, Calgary, Edmonton, Vancouver, Montreal, and all of Canada.

Pilot Operated Safety Valve Technical Specifications:

• Nominal Size: 1″ to 12″
• Pressure Class: Class 150 to Class 2500
• Temperature Range: -196°C to 550°C
• End Connections: Flanged, Threaded, Butt Weld
• Design Standards: API 526, API 527, ASME Section VIII, ASME B16.34
• Inspection and Testing: Hydrostatic Pressure Test, Set Pressure Calibration, Seat Leakage Test, Pilot Functional Test, Performance Verification

Pilot Operated Safety Valve Material Configuration:

Body and Pressure Retaining Parts:

• ASTM A216 WCB / WCC
• ASTM A351 CF8 / CF8M
• ASTM A182 F304 / F316 / F316L
• ASTM A890 F51
• ASTM A890 F53 / F55 / 2507
• ASTM A351 Alloy 20 (CN7M)
• ASTM B564 Hastelloy C276
• ASTM B564 Inconel 625 / 718

Internal Components:

• Main Valve Disc: Stainless Steel / Duplex Stainless Steel / Hastelloy
• Pilot Valve Components: Stainless Steel
• Stem: ASTM A182 F304 / F316

Sealing Components:

• Seat: Soft Seated / Metal Seated
• Gasket: Graphite / Spiral Wound
• Packing: Graphite

Pilot Operated Safety Valve Operating Principle:

A Pilot Operated Safety Valve uses system pressure and an external pilot valve to control the opening and closing of the main valve. The pilot sustains pressure in the control chamber during regular operation, which maintains the primary valve securely sealed until the predetermined pressure is attained.

Excess pressure can be quickly released by the main valve opening as the pilot releases pressure from the control chamber when the system pressure exceeds the predetermined value. The main valve is reseated firmly for reliable overpressure protection after normal operating pressure is restored, allowing the pilot to shut automatically.

Pilot Operated Safety Valve Installation  Applications:

• Oil and Gas Industry: Production facilities, processing facilities, and high pressure gas safety equipment
• Petrochemical Industry: Components of the refinery, reactors, and storage facilities
• LNG terminals: Storage facilities for cryogenic liquids and gas liquefaction plants
• Pipeline infrastructure: High pressure gas pipeline systems
• Power generation: Boilers, steam systems, and high pressure gas safety equipment for auxiliary equipment
• Chemical Processing Industry: High Pressure gas safety equipment for reactors, storage vessels and pipelines
• Industrial gases: High pressure gas storage and distribution systems
• Terminals: Bulk liquid and gas storage facilities

Pilot Operated Safety Valve Material Options:

Standard Materials:

Component	Material	Grade	Typical Application
Body	Carbon Steel	ASTM A216 WCB / WCC	General industrial service
Body	Stainless Steel	ASTM A351 CF8 / CF8M, ASTM A182 F304 / F316 / F316L	Corrosive process media
Body	Duplex Stainless Steel	ASTM A890 F51	Offshore and seawater service
Body	Super Duplex Stainless Steel	ASTM A890 F53 / F55 / 2507	High chloride applications
Body	Alloy 20	ASTM A351 CN7M	Acid handling systems
Body	Hastelloy	ASTM B564 C276	Severe chemical service
Body	Inconel	ASTM B564 625 / 718	High-temperature and high-pressure applications

Additional Material Options:

• Monel 400 for marine and corrosive environments
• Titanium Grade 2 / Grade 5 for seawater applications
• Low Temperature Carbon Steel (LCB / LCC) for cryogenic service
• Hard-faced trim for abrasive process media
• Customized material combinations available to suit specific project requirements

Pilot Operated Safety Valve Product Features:

• Valve Type: Pilot Operated Safety Valve
• Operation: Pilot Operated
• Body Construction: Bolted Bonnet
• End Configuration: Flanged, Threaded, Butt Weld

Performance Features:

• Precise and consistent set pressure
• Close seating with low leakage from seats
• Can be used for applications requiring high back pressure
• Quick opening and reliable seating
• Less material loss in regular operations
• Has higher relieving capacity compared to ordinary safety valves
• Suitable for tough pressure protection systems
• Longer service life

Inspection Procedures:

• Hydrostatic Pressure Testing
• Set Pressure Calibration
• Seat Leakage Testing
• Pilot Functional Testing
• Performance Verification
• Visual and Dimensional Inspection

Pilot Operated Safety Valve Connection Options:

Our Pilot Operated Safety Valve is manufactured with multiple end connection options to suit industrial pressure relief systems.

• Flanged as per ASME B16.5
• Threaded (NPT / BSP)
• Butt Weld as per ASME B16.25
• Customized end connections available upon request
• Special connection configurations available based on project requirements