Our Flanged Swing Check Valve PN16 is designed for efficient backflow prevention and smooth flow control in water and industrial piping systems. Built with a robust SG Iron body coated with Fusion Bonded Epoxy (FBE – 250 Micron) for superior corrosion resistance, this valve provides long-lasting reliability and secure flanged installation.

Engineered for optimal sealing and durability, the valve features an EPDM encapsulated SG Iron gate paired with a high-grade Stainless Steel swing arm and hanger pin. Designed to comply with recognized international standards, it prevents fluid reversal while maintaining low head loss during operation.

Size Range & Pressure Rating

• Size Range: DN50 to DN300

• Pressure Rating: PN16 (16 Bar / 1600 kPa)

Construction & Materials

• Body Material: SG Iron – Grd 420/12 FBE Coated

• Gate / Disc Material: EPDM Encapsulated SG Iron (NBR Encapsulated available on request)

• Bonnet Material: SG Iron – Grd 420/12

• Swing Arm Material: Stainless Steel – Grd 304

• Hanger Pin Material: Stainless Steel – Grd 410

• Split Pin Material: Stainless Steel – Grd 304

• Cap Screw Material: HT Steel – Grd 8.8

• O-Ring / Seals: NBR / EPDM

• Drain Plug: Brass

• Coating: Fusion Bonded Epoxy (FBE) – 250 Micron (Signal Blue)

Key Features

• Designed to BS5153 standards

• Complies to SANS 1551-2 2007 specifications

• EPDM encapsulated SG Iron gate for reliable sealing (NBR option available)

• High-strength Stainless Steel swing arm and hanger pin

• Counter Weight option added on request

• Durable 250 Micron FBE coating for exceptional exterior and interior protection

Applications

Ideal for water distribution networks, wastewater treatment, industrial fluid processing, pumping stations, and general pipeline installations requiring dependable backflow prevention under PN16 operating conditions.

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The Shouldered Single Door Non-Return Valve is designed to provide efficient and reliable backflow prevention in pipeline systems. Built with a robust epoxy powder coated ductile iron body, this valve ensures durability, corrosion resistance, and long service life in demanding environments.

Featuring a stainless steel door and EPDM seal, the valve delivers tight shut-off and dependable sealing performance under varying pressure conditions. The single door design allows for smooth operation and quick response to flow changes, helping to protect system components from reverse flow damage.

The valve shoulder conforms to SANS 815-1 standards, ensuring compatibility with standard pipeline installations. With a pressure rating of PN20 (20 bar), it is suitable for high-pressure applications across a wide range of industries.

Available in sizes from DN50 to DN200, this compact and efficient valve is ideal for installations where space is limited but performance cannot be compromised.

Key Features:

• Pressure rating: PN20 (20 bar)
• Epoxy powder coated ductile iron body for corrosion resistance
• Stainless steel door for strength and durability
• EPDM seal for reliable, leak-tight performance
• Stainless steel pin for secure operation
• Single door design for quick response and smooth flow
• Shoulder design conforms to SANS 815-1
• Compact and space-saving design
• Size range: DN50 – DN200

Applications:
Ideal for water distribution systems, pumping stations, and industrial pipelines where effective backflow prevention and system protection are essential.

The Shouldered Single Door Non-Return Valve offers dependable, low-maintenance performance with efficient operation and long-term reliability.

https://majorvalves.co.za/mve-shouldered-valve-pn20/

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The UNI-FLO Swing Check Valve is designed to effectively prevent reverse flow in pipeline systems, ensuring reliable operation and protection of pumps, equipment, and infrastructure. Manufactured in accordance with BS5153 standards, this valve delivers dependable performance in a wide range of water and industrial applications.

Engineered for full, unrestricted flow, the swing check design minimises pressure loss while allowing smooth fluid passage. The valve can be installed in both horizontal and vertical positions, providing flexibility across various system configurations.

Flange dimensions conform to BS4504 PN10/16 standards, with optional drilling available to suit BS10 Table D/E requirements. Face-to-face dimensions are manufactured in line with BS5153, and all valves are tested in accordance with BS6755 to ensure quality, strength, and leak-tight performance.

For enhanced control and operational stability, the valve can be supplied with an external lever and counterweight (L.W.) on request, helping to regulate closing speed and reduce water hammer.

With a pressure rating of 16 bar, the UNI-FLO Swing Check Valve is built for durability and consistent performance in demanding environments.

Key Features:

• Designed to BS5153 standards
• Prevents reverse flow and protects system components
• Full bore design for minimal pressure loss
• Suitable for horizontal and vertical installation
• Flanged to BS4504 PN10/16 (optional BS10 Table D/E)
• Face-to-face dimensions in accordance with BS5153
• Tested to BS6755 standards
• Optional external lever and counterweight (L.W.)
• Pressure rating: 16 bar

Applications:
Ideal for water distribution systems, pumping stations, irrigation networks, and industrial pipelines where backflow prevention and system protection are critical.

The UNI-FLO Swing Check Valve offers dependable, low-maintenance performance with efficient flow characteristics and long service life.

More Info. (.pdf)

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UNI-FLO Wafer Double Door Check Valve 

The UNI-FLO Wafer Double Door Check Valve is designed for efficient backflow prevention in water and industrial pipeline systems. Featuring a compact, lightweight wafer-type design, this valve ensures easy installation between flanges while maintaining high performance and reliability.

Constructed with durable 304 stainless steel dual discs, the valve provides strength, corrosion resistance, and long service life. The resilient seat ensures a positive shut-off during reverse flow, effectively preventing backflow and protecting system components.

Engineered for low head loss, the double door design allows smooth flow with minimal pressure drop, improving overall system efficiency. With a pressure rating of 16 bar, the UNI-FLO wafer check valve is suitable for a wide range of demanding applications.

Available in sizes ranging from 50mm to 600mm, this valve offers flexibility across various pipeline requirements.

Key Features:

• Lightweight wafer-type design for easy installation
• 304 stainless steel double door (dual disc) construction
• Resilient seat for positive shut-off and backflow prevention
• Low head loss for improved flow efficiency
• Corrosion-resistant and durable design
• Pressure rating: 16 bar
• Size range: 50mm – 600mm

Applications:
Ideal for water distribution systems, HVAC, irrigation, and industrial pipelines where reliable backflow prevention and low pressure loss are essential.

The UNI-FLO Wafer Double Door Check Valve delivers dependable, low-maintenance performance with efficient flow characteristics and long service life.

More Info. (.pdf)

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