CHECK VALVES / NON-RETURN VALVES

1️⃣ PRODUCT INTRODUCTION

VikTech Fittings is a trusted Supplier, Trader & Exporter of Check Valves / Non-Return Valves, providing reliable flow-control and backflow-prevention solutions for industrial piping systems, process plants, oil & gas facilities, petrochemical plants, power plants and engineering applications.

Check Valves are automatic flow-control devices designed to allow fluid flow in one direction and prevent reverse flow. They operate without manual intervention and help protect pumps, compressors, pipelines and other equipment from backflow and potential damage.

VikTech Fittings supplies Check Valves in different designs, materials, sizes, pressure classes, end connections and configurations according to customer requirements, applicable standards and project specifications.

2️⃣ TECHNICAL SPECIFICATIONS

Product: Check Valves / Non-Return Valves

Types:
✓ Swing Check Valves
✓ Wafer Check Valves
✓ Dual Plate Check Valves
✓ Lift Check Valves
✓ Piston Check Valves
✓ Spring Check Valves
✓ Tilting Disc Check Valves
✓ Forged Check Valves
✓ Cast Steel Check Valves
✓ Flanged Check Valves
✓ Threaded Check Valves
✓ Socket Weld Check Valves
✓ Butt Weld Check Valves

Materials:
✓ Carbon Steel
✓ Stainless Steel
✓ Alloy Steel
✓ Cast Steel
✓ Forged Steel
✓ Cast Iron
✓ Ductile Iron
✓ Duplex Stainless Steel
✓ Special Alloys

Sizes:
Available in metric and inch sizes.

Pressure Classes:
✓ Class 150
✓ Class 300
✓ Class 600
✓ Class 900
✓ Class 1500
✓ Class 2500
✓ PN10 / PN16 / PN25 / PN40 and other ratings

End Connections:
✓ Flanged
✓ Wafer
✓ Lug
✓ Butt Weld
✓ Socket Weld
✓ Threaded / Screwed

3️⃣ AVAILABLE MATERIAL OPTIONS

CARBON STEEL

✓ Carbon Steel Check Valves
✓ Cast Carbon Steel Check Valves
✓ Forged Carbon Steel Check Valves
✓ Suitable ASTM grades according to application

STAINLESS STEEL

✓ SS 304
✓ SS 304L
✓ SS 316
✓ SS 316L
✓ Other stainless-steel grades as required

ALLOY STEEL

✓ Alloy Steel Check Valves
✓ High-temperature service options
✓ High-pressure service options
✓ Application-specific alloy grades

CAST IRON & DUCTILE IRON

✓ Cast Iron Check Valves
✓ Ductile Iron Check Valves
✓ Suitable for water and utility applications

DUPLEX & SPECIAL ALLOYS

✓ Duplex Stainless Steel
✓ Super Duplex
✓ Nickel Alloys
✓ Monel
✓ Inconel
✓ Hastelloy
✓ Other special alloys according to project requirements

4️⃣ SIZE & DIMENSIONAL RANGE

VikTech Fittings supplies Check Valves in a wide range of:

✓ Nominal Valve Sizes
✓ Bore Sizes
✓ Face-to-Face Dimensions
✓ Flange Dimensions
✓ Pressure Ratings
✓ End Connection Dimensions
✓ Disc Configurations

Check Valves can be supplied in inch and metric sizes according to valve type and applicable standards.

Typical industrial Check Valve sizes may range from ½" NB to 48" NB and above, depending on design, pressure class and application.

Custom sizes and configurations can be supplied according to customer drawings and project specifications.

5️⃣ TYPES OF CHECK VALVES

SWING CHECK VALVES

Swing Check Valves use a hinged disc that moves according to the direction of flow.

✓ Reliable Backflow Prevention
✓ Suitable for Horizontal Piping
✓ Available in Various Materials
✓ Suitable for Industrial Applications

DUAL PLATE CHECK VALVES

Dual Plate Check Valves use two spring-loaded plates and offer a compact design.

✓ Compact Construction
✓ Low Weight
✓ Fast Closing Action
✓ Suitable for Flanged Piping Systems

WAFER CHECK VALVES

Wafer Check Valves are installed between pipe flanges and provide a compact solution.

✓ Space-Saving Design
✓ Lightweight Construction
✓ Suitable for Various Industrial Systems

LIFT CHECK VALVES

Lift Check Valves use a disc that moves vertically to control flow.

✓ Suitable for High-Pressure Applications
✓ Reliable Sealing
✓ Suitable for Clean Process Media

PISTON CHECK VALVES

Piston Check Valves provide controlled movement of the closure element and are commonly used in process and high-pressure services.

SPRING CHECK VALVES

Spring Check Valves use a spring-assisted closure mechanism to provide rapid shut-off and backflow prevention.

FORGED CHECK VALVES

Forged Check Valves are commonly used in high-pressure and high-temperature applications, particularly for smaller nominal sizes.

6️⃣ STANDARDS & SPECIFICATIONS

Check Valves can be supplied according to applicable:

✓ API Standards
✓ ASME Standards
✓ ANSI Standards
✓ ASTM Standards
✓ MSS Standards
✓ ISO Standards
✓ DIN Standards
✓ EN Standards
✓ BS Standards
✓ IS Standards
✓ Customer Drawings & Project Specifications

Depending on valve type and application, applicable standards may include:

✓ API 6D
✓ API 594
✓ API 598
✓ API 602
✓ ASME B16.34
✓ ASME B16.10
✓ ASME B16.5
✓ ASME B16.47

Exact standards are confirmed according to valve type, material, size, pressure class and service conditions.

7️⃣ MANUFACTURING & TESTING

Depending on valve design and specification, manufacturing and supply may involve:

✓ Material Selection
✓ Casting / Forging
✓ CNC Machining
✓ Body Manufacturing
✓ Bonnet / Cover Manufacturing
✓ Disc Manufacturing
✓ Hinge / Spring Manufacturing
✓ Seat Manufacturing
✓ Threading / Drilling
✓ Assembly
✓ Pressure Testing
✓ Shell Testing
✓ Seat Leakage Testing
✓ Dimensional Inspection
✓ Functional Testing
✓ Final Quality Inspection

Testing can be arranged according to applicable standards and project requirements.

8️⃣ QUALITY & INSPECTION

At VikTech Fittings, quality, dimensional accuracy and specification compliance are important for industrial Check Valve applications.

Check Valves can be supplied according to specified:

✓ Valve Type
✓ Material Grade
✓ Nominal Size
✓ Pressure Class
✓ End Connection
✓ Disc Configuration
✓ Seat Material
✓ Trim Material
✓ Flow Direction
✓ Testing Requirements
✓ Project Specifications

Where required, documentation and inspection support can be arranged, including:

✓ Material Test Certificates (MTC)
✓ Hydrostatic Test Reports
✓ Pneumatic Test Reports
✓ Seat Leakage Test Reports
✓ Dimensional Inspection Reports
✓ Certificate of Conformity
✓ Inspection Certificates
✓ Third-Party Inspection, subject to order requirements

9️⃣ APPLICATIONS & INDUSTRIES

Check Valves are widely used in:

✓ Oil & Gas
✓ Petroleum Refineries
✓ Petrochemical Plants
✓ Chemical Industries
✓ Power Plants
✓ Water Treatment Plants
✓ Wastewater Treatment
✓ Pumping Systems
✓ Compressor Systems
✓ Steam Systems
✓ Fertilizer Plants
✓ Steel Plants
✓ Cement Plants
✓ Mining Industries
✓ Marine Applications
✓ Pipeline Systems
✓ Fire Fighting Systems
✓ EPC Projects
✓ General Engineering

Check Valves are particularly important in systems where reverse flow must be prevented to protect equipment and maintain proper flow direction.

🔟 SEAT & TRIM OPTIONS

Check Valves can be supplied with different seat and trim configurations according to service conditions.

Available options may include:

✓ Metal Seats
✓ Soft Seats
✓ Stainless Steel Trim
✓ Alloy Steel Trim
✓ PTFE
✓ RPTFE
✓ Graphite
✓ EPDM
✓ NBR
✓ FKM / Viton
✓ Hard-Faced Seats
✓ Application-Specific Sealing Materials

Seat and trim selection depends on pressure, temperature, corrosion resistance and process media.

1️⃣1️⃣ FLOW & INSTALLATION OPTIONS

Check Valves can be selected according to piping arrangement and flow requirements:

✓ Horizontal Installation
✓ Vertical Installation where permitted by design
✓ Flanged Installation
✓ Wafer Installation
✓ Lug Installation
✓ Threaded Installation
✓ Socket Weld Installation
✓ Butt Weld Installation

Valve selection should consider flow direction, installation orientation, operating pressure, temperature and process media.

1️⃣2️⃣ PACKING & MARKING

VikTech Fittings can provide suitable packing for domestic and export shipments, including:

✓ Protective Packaging
✓ Cartons / Boxes
✓ Wooden Cases
✓ Wooden Pallets
✓ Export Packing
✓ Seaworthy Packing

Valve marking can include:

✓ Manufacturer / Supplier Identification
✓ Valve Size
✓ Pressure Class
✓ Material Grade
✓ Valve Type
✓ Flow Direction
✓ Heat / Batch Number
✓ Serial Number
✓ Customer Identification
✓ Project Marking

1️⃣3️⃣ WHY CHOOSE VIKTECH FITTINGS?

✓ Reliable Check Valve Supply
✓ Wide Range of Non-Return Valves
✓ Carbon Steel, Stainless Steel & Alloy Steel Options
✓ Cast & Forged Construction
✓ Swing, Wafer & Dual Plate Designs
✓ Multiple Pressure Classes
✓ Flanged, Threaded, SW & BW Connections
✓ Compact Valve Options
✓ Project-Specific Supply
✓ Competitive Pricing
✓ Quality-Focused Sourcing
✓ Inspection & Documentation Support
✓ Export Packing & International Supply
✓ Responsive Customer Service

1️⃣4️⃣ VIKTECH FITTINGS — YOUR CHECK VALVE PARTNER

Whether you require Swing Check Valves, Wafer Check Valves, Dual Plate Check Valves, Lift Check Valves, Piston Check Valves, Spring Check Valves, Forged Check Valves or Cast Steel Check Valves, VikTech Fittings supports industrial customers with specification-based sourcing and dependable supply.

We cater to requirements for industrial plants, piping systems, oil & gas projects, petrochemical facilities, power plants, EPC contractors, engineering companies and international buyers.

Contact VikTech Fittings for Check Valves, Non-Return Valves, Industrial Valves and Custom Flow-Control Solutions.

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