PPH Wafer Check Valve

A PPH Wafer Check Valve is a type of non-return valve made from Polypropylene Homopolymer (PPH), designed to allow fluid flow in one direction and automatically prevent backflow in a piping system.It has a wafer-type (compact, slim) design, which means it is installed between two flanges and requires less space compared to conventional check valves.

The PPH wafer check valve has a molded body surrounding the opening.PPH wafer check valves have a molded body that enables the disc to fully open, enabling full flow. PPH Wafer check valves are used in situations where flow is not a concern. A PPH Wafer Check Valve is a compact, corrosion-resistant one-way valve that prevents reverse flow and is installed between flanges in industrial piping systems.

PPH Wafer Check Valve Details

D: Nominal Pipe Outside Diameter
DN: Nominal Diameter Bore
OP: Operating Pressure Range (in bar)
De: Outer Fitting Diameter
Z: Face-to-Face Width (Thickness)
Di: Internal Opening Diameter
A: Inner Flange Diameter
B: Disc Clearance Distance (When open)
C: Lower Body Height

D	DN	OP	De	Z	Di	A	B	C
50	40	0-5	95	16	22	72	25	28
63	50	0-5	109	20	32	86	37	29
75	65	0-5	129	20	40	105	50	31
90	80	0-5	144	20	54	119	61	32
110	100	0-5	164	22	70	146	77	31
140	125	0-5	195	23	92	173	94	35
160	150	0-5	220	25	105	197	100	40
225	200	0-5	275	35	154	255	152	38
280	250	0-5	330	40	192	312	180	41
315	300	0-5	380	45	227	363	215	41

Parameter / Property	Specification / Details
Valve Type	Wafer Type Check Valve (Non-return)
Body Material	PPH (Polypropylene Homopolymer)
Disc Material	PPH / PVDF (optional)
Seal Material	EPDM / FKM (Viton) / PTFE
Design Type	Single Disc / Dual Plate
Operation	Automatic (self-actuated)
Flow Direction	One-way (unidirectional)
Size Range	DN15 to DN200 (½” to 8”)
Pressure Rating	PN10 / PN16 (10–16 bar)
Working Pressure	Up to 10–16 bar
Temperature Range	0°C to 90°C
End Connection	Wafer type (installed between flanges)
Mounting	Horizontal / Vertical
Leakage Class	Bubble-tight sealing (Class VI typical)
Standards	DIN, ANSI, ISO
Cracking Pressure	Low (easy opening)
Color	Light Grey / Natural
Structure	Thin wafer-type (space-saving design)
Surface Finish	Smooth, corrosion-resistant
Installation	Easy, clamped between flanges
Chemical Resistance	Excellent (acids, alkalis, chemicals)
Closing Mechanism	Disc closes automatically on reverse flow
Applications	Chemical, water treatment, industrial fluids

1. Compact & Lightweight Design

Slim wafer-type body with short face-to-face length
Ideal for space-constrained installations

2. Easy Installation

Installed between two flanges (flangeless design)
Requires minimal fittings → reduces installation time and cost

3. Automatic Non-Return Operation

Allows one-way flow only
Automatically prevents backflow, protecting pumps and equipment

4. Low Flow Resistance

Streamlined internal design ensures smooth fluid passage
Results in low pressure drop and improved efficiency

5. Quick Response & Fast Closing

Disc closes rapidly when flow reverses
Helps reduce water hammer and pressure surges

6. Excellent Sealing Performance

Tight sealing between disc and seat
Ensures leak-proof operation even under pressure

7. High Chemical & Corrosion Resistance

Made from PPH (Polypropylene Homopolymer)
Suitable for acids, alkalis, and aggressive chemicals

9. Low Maintenance

Simple construction with fewer moving parts
Long service

Parameter	Specification
Standard Pressure Rating	PN10
Maximum Pressure	10 bar
Optional Pressure Rating	PN16 (in some models)
Test Pressure (Hydrostatic)	1.5 × PN (15 bar for PN10)
Cracking Pressure	< 0.3 bar (minimum pressure to open)
Applicable Standards	DIN / ISO / ASTM
Seal Types	EPDM / FPM (Viton)
Operating Condition	Suitable for low to medium pressure systems

If you are searching for customized product designs that meet your requirements, don’t worry. Petron Thermoplast also offers custom product manufacturing services to meet the unique needs of various industries. Work with our expert engineers to create custom designs suited for your application.

Benefits of Using PPH Wafer Check Valve

Compact and Lightweight:

The wafer-style body allows for easy installation between flanges and minimal space requirement, making it suitable for tight installations.

Corrosion-Resistant

Made from PPH, it delivers excellent chemical and corrosion resistance, making it suitable for use in chemical processing, water treatment, and industrial applications.

Automatic Operation

The valve operates automatically, allowing flow in one direction and closing when reverse flow occurs, protecting pumps and equipment from potential damage.

Low Cracking Pressure

Ensures smooth opening and closing with minimal pressure drop, contributing to efficient and reliable non-return performance.

Maintenance-Free

Simple design with no external actuation required, reducing maintenance needs and operational costs.

Temperature & Pressure Stability

Performs reliably under varying process conditions, ensuring consistent performance.

Types of PPH Wafer Check Valve

1. Single Plate (Single Disc) Wafer Check Valve

Uses a single swinging disc to control flow
Opens when fluid flows forward and closes on reverse flow
Simple construction with low maintenance
Suitable for low to medium pressure systems

2. Dual Plate (Double Door) Wafer Check Valve

Consists of two semi-circular plates (doors)
Plates open with flow and close quickly with reverse pressure
Provides faster response and reduced water hammer
Ideal for high flow and higher pressure applications

3. Spring-Assisted Wafer Check Valve

Equipped with an internal spring (e.g., Hastelloy C / SS spring)
Spring helps in quick closing of disc
Minimizes backflow and water hammer effect
Works efficiently in horizontal & vertical installations

4. Lift Type Wafer Check Valve

Disc moves vertically (lift action) instead of swinging
Suitable for high-pressure or high-temperature systems
Provides tight sealing performance

5. Non-Slam (Silent) Wafer Check Valve

Designed for smooth and silent closing
Prevents sudden pressure surges and noise
Common in pumping systems and pipelines with fluctuating flow

Applications of PPH Wafer Check Valve

Process Industry

High Purity Applications

Electronic Industry

Electrical Industry

Semi-conductors Industry

Pharmaceutical Industry

Solar power panels

Sugar Industry

Paper & Pulp Industry

Nuclear Power Industry

Automotive Industry

DI water plants

Why Choose Petron Thermoplast?

At Petron Thermoplast, PPH Wafer Check Valves have become indispensable in chemical manufacturing, semiconductor fabrication, pharmaceutical production, and oil and gas treatment facilities, where purity, reliability, and longevity are critical.