Technical Specifications
| Specification | Details |
|---|---|
| Product | Industrial Check Valves |
| Types | Swing, Lift, Dual Plate, Piston, Wafer & Tilting Disc |
| Design | Automatic, Self-Actuated & Non-Return |
| Pressure Class | ASME Class 150–2500, as applicable |
| Body Materials | Carbon Steel, Stainless Steel, Alloy Steel & Cast Iron |
| Disc Type & Material | Selected as per application requirements |
| Trim & Seat | Selected based on fluid compatibility and operating conditions |
| End Connections | Flanged, Wafer, Butt-Weld & Threaded |
| Installation | Horizontal / Vertical, according to valve design |
| Applications | Oil & Gas, Chemical, Power, Steam, Water Treatment & Process Industries |
Product Information
Check Valves — Technical Overview & Selection Guide
Overview
Check valves are automatic, self-actuated valves designed to prevent reverse flow in piping systems. They operate according to fluid-flow and pressure conditions without manual or external actuation.
Key Features
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Automatic prevention of reverse flow
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No external actuation required
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Suitable for liquid, gas, and steam services
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Low-pressure-drop designs available
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Flanged, wafer, butt-weld, and threaded end connections
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Horizontal or vertical installation, depending on valve design
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Suitable for high-pressure and high-temperature applications
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Available in ASME Class 150–2500, as applicable
Common Check Valve Types
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Swing Check Valve
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Lift Check Valve
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Dual Plate Check Valve
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Piston Check Valve
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Wafer Check Valve
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Tilting Disc Check Valve
Technical Selection Parameters
Selection should consider:
| Parameter | Selection Consideration |
|---|---|
| Size | DN / NPS |
| Pressure Class | ASME Class 150–2500, as applicable |
| Design Pressure | Project/design requirement |
| Design Temperature | Project/design requirement |
| Fluid | Liquid / Gas / Steam |
| Flow Direction | Required flow direction |
| Body Material | Carbon Steel / Stainless Steel / Alloy Steel / Cast Iron |
| Disc Type & Material | Based on service conditions |
| Trim & Seat | Based on fluid compatibility and operating conditions |
| Cracking Pressure | Required opening pressure |
| End Connection | Flanged / Wafer / Butt-Weld / Threaded |
| Installation | Horizontal / Vertical, according to valve design |
| Pressure Drop | Required flow capacity and system requirements |
| Reverse Flow | Back-pressure and closing requirements |
Materials
Common body materials include:
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Carbon Steel
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Stainless Steel
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Alloy Steel
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Cast Iron
Trim and seat materials should be selected based on fluid compatibility, pressure, temperature, erosion, corrosion, and service requirements.
End Connections
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Flanged
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Wafer
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Butt-Weld
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Threaded
Testing & Inspection
Depending on project specifications and applicable standards, check valves may undergo:
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Shell/body pressure testing
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Seat leakage testing
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Dimensional inspection
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PMI (Positive Material Identification)
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MTC verification
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NDE (Non-Destructive Examination)
Quick Selection Guide
Flow Direction: Confirm required direction of flow and potential reverse-flow conditions.
Fluid: Identify whether the service is liquid, gas, or steam.
Size: Specify DN/NPS based on required flow rate and piping size.
Pressure: Provide operating and design pressure, together with the applicable ASME pressure class.
Temperature: Specify operating and design temperature.
Installation: Confirm horizontal or vertical installation requirements.
Pressure Drop: Evaluate flow capacity and allowable system pressure loss.
Reverse Flow: Consider back-pressure, closing characteristics, and potential water hammer or surge.
Connection: Specify flanged, wafer, butt-weld, or threaded connection.
Applications
Check valves are commonly used in:
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Oil & Gas
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Refineries
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Petrochemical Plants
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Chemical Plants
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Power Plants
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Steam Systems
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Water Treatment
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Pump Discharge Lines
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Process Piping
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Pipelines
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Utilities
Engineering Inputs for RFQ
For technical enquiry and quotation, provide:
Valve Type • Size • Pressure Class • Fluid • Flow Direction • Design Pressure • Design Temperature • Body Material • Trim & Seat • End Connection • Installation Orientation • Required Flow Rate • Testing & Inspection Requirements
Manufacturer Brands
1. ZOLOTO — Industrial Valves
Brand: ZOLOTO
Website: www.zolotovalves.com
2. MARCK — Industrial Valves
Brand: MARCK
Manufacturer: Hawa Engineers Ltd.
Website: www.marckvalves.com
3. LEHRY — Industrial Valves and Instrumentation
Brand: LEHRY
Manufacturer: Lehry Instrumentation & Valves Pvt. Ltd.
Website: www.lehryvalves.com
4. UFLOW — Automation and Process Control Valves
Brand: UFLOW
Manufacturer: Uflow Automation India
Website: www.uflowvalve.com
5. V-TORK CONTROLS — Industrial Flow Control Valves
Brand: V-TORK CONTROLS
Website: www.vtorkcontrols.com
6. PENNANT — Steam Traps and Pipeline Accessories
Brand: PENNANT
Manufacturer: Pennant Engineering Pvt. Ltd.
Website: www.pennantcorp.com
