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Home|Product|Industrial Valves|VINVAL Valves|Check Valve

Check Valve

Single Flap Check Valve (Flap Wafer Check Valve) | SS316 Single Plate Check Valve PN16

Price: 1,439,000 ^d 1,659,000 ^d

Model:

High-quality SS316 Flap Wafer Check Valve, Single Flap Check Valve, and Single Plate Check Valve with PN16 pressure rating. Wafer connection for PN10, PN16, and ANSI Class 150 flanges. Competitive prices and worldwide delivery.

Trademark: VINVAL

Origin: China

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Single Flap Check Valve | Single Plate Check Valve | Flap Wafer Check Valve | SS316 PN16

What is a Flap Wafer Check Valve?

A Flap Wafer Check Valve, also known as a Single Flap Check Valve or Single Plate Check Valve, is a non-return valve designed with a single swinging disc that automatically prevents reverse flow in piping systems.

The valve operates solely by the flow pressure. When the fluid flows in the correct direction, the disc opens. Once the flow stops or reverses, the disc closes immediately, protecting pumps, pipelines, and other equipment from backflow damage.

Flap Wafer Check Valve | Single Flap Check Valve | Single Plate Check Valve

This type of valve is widely used in:

Water treatment systems
Food and beverage processing
Pharmaceutical plants
HVAC systems
Chemical processing
Oil and gas industries
Compressed air systems
Marine applications
Industrial process piping

Technical Specifications

Specification	Description
Product Name	Flap Wafer Check Valve
Alternative Names	Single Flap Check Valve, Single Plate Check Valve
Valve Type	Wafer Check Valve
Sizes	DN50 – DN300
Body Material	Stainless Steel SS316
Disc Material	Stainless Steel SS316
Seat Material	Viton / EPDM
Working Pressure	PN16 (16 Bar)
Connection Standard	Wafer for PN10 / PN16 / ANSI Class 150 Flanges
Suitable Media	Water, Steam, Oil, Gas, Chemicals

Valve Construction

The valve consists of the following main components:

SS316 Valve Body
SS316 Swing Disc
Viton or EPDM Seat
Hinge Pin
Retaining Pin

Its compact structure ensures reliable operation, minimal maintenance, and long service life.

Working Principle

The valve operates automatically without external power.

When fluid flows in the forward direction, the pressure pushes the disc open.
The fluid passes through the valve with minimal pressure loss.
When the flow stops or reverses, the disc closes immediately.
Reverse flow is effectively prevented, protecting the entire piping system.

Advantages

Compact and lightweight design
Easy installation between flanges
Maintenance-free operation
Excellent corrosion resistance with SS316 construction
Reliable sealing with Viton or EPDM seat
Low pressure drop
Long service life
Suitable for various industrial applications
Cost-effective solution

Applications

Flap Wafer Check Valves are widely used in:

Water supply systems
Wastewater treatment plants
Chemical processing
Food and beverage industries
Pharmaceutical manufacturing
HVAC systems
Fire protection systems
Power plants
Marine engineering
Industrial piping systems

Price List – Flap Wafer Check Valve SS316 PN16

Size	Body	Disc	Seat	Pressure	Connection	Price (Excl. VAT)
DN50	SS316	SS316	Viton / EPDM	PN16	Wafer PN10/PN16/ANSI150	VND 1,439,000
DN65	SS316	SS316	Viton / EPDM	PN16	Wafer PN10/PN16/ANSI150	VND 1,876,000
DN80	SS316	SS316	Viton / EPDM	PN16	Wafer PN10/PN16/ANSI150	VND 2,135,000
DN100	SS316	SS316	Viton / EPDM	PN16	Wafer PN10/PN16/ANSI150	VND 2,652,000
DN125	SS316	SS316	Viton / EPDM	PN16	Wafer PN10/PN16/ANSI150	VND 3,752,000
DN150	SS316	SS316	Viton / EPDM	PN16	Wafer PN10/PN16/ANSI150	VND 4,981,000
DN200	SS316	SS316	Viton / EPDM	PN16	Wafer PN10/PN16/ANSI150	VND 8,409,000
DN250	SS316	SS316	Viton / EPDM	PN16	Wafer PN10/PN16/ANSI150	VND 14,491,000
DN300	SS316	SS316	Viton / EPDM	PN16	Wafer PN10/PN16/ANSI150	VND 21,995,000

Note: Prices are exclusive of VAT and may change without prior notice. Please contact us for the latest quotation and project discounts.

Why Choose PM-E?

High-quality imported products
Full Certificate of Origin (CO) and Certificate of Quality (CQ)
Competitive pricing
Fast nationwide and international delivery
Professional technical support
Large inventory available
Warranty according to manufacturer standards
Experienced industrial valve supplier

Frequently Asked Questions (FAQ)

What is the difference between a Single Flap Check Valve and a Dual Plate Check Valve?

A Single Flap Check Valve uses one swinging disc, offering a simple design, reliable sealing, and low maintenance. A Dual Plate Check Valve uses two spring-loaded plates, making it more suitable for larger pipe systems with faster closing action.

Can this valve be used for chemical applications?

Yes. The SS316 body and disc provide excellent corrosion resistance, while Viton seats offer compatibility with many chemicals and oils.

Which flange standards are supported?

The valve is designed for installation between PN10, PN16, and ANSI Class 150 flanges.

What sizes are available?

Standard sizes include DN50, DN65, DN80, DN100, DN125, DN150, DN200, DN250, and DN300.

Contact Us

If you are looking for a reliable Flap Wafer Check Valve, Single Flap Check Valve, or Single Plate Check Valve, PM-E is your trusted supplier.