PPH Wafer Check Valve with Hastelloy C Spring
The PPH Pressure Release Valve (also known as a pressure relief valve) is a safety device designed to automatically relieve excess pressure from pipelines, tanks, or equipment to protect systems from overpressure conditions. Constructed using Polypropylene Homopolymer (PPH), this valve is highly resistant to chemical corrosion, making it ideal for aggressive and hazardous fluid systems.This valve is an essential component in chemical processing plants, dosing systems, and industrial fluid networks, offering reliable and accurate pressure control to maintain operational safety and system integrity.
A PPH Pressure Release Valve is a safety device made from Polypropylene Homopolymer (PPH) that is designed to automatically release excess pressure from a piping system or tank when the internal pressure exceeds a preset limit. This helps to protect equipment, pipelines, and personnel from damage or failure due to overpressure conditions.A PPH Pressure Release Valve is a protective valve that prevents overpressure by safely releasing excess fluid or gas from the system.
- Chemical Resistance
- Low Maintenance Requirement
- Low Thermal Conductivity
- Long Service Life
- Easy Installation
- Corrosion Resistance
PPH Wafer Check Valve with Hastelloy C Spring Details
D: Outside Diameter
D1: Bolt Circle Diameter
D2: Internal Diameter
K: Flange Face Diameter
H: Inlet Bore Diameter
H1: Total Vertical Height
C: Flange Thickness
m: Face-to-Face Dimension
| Size | DN | D (Outside Ø) | D1 (PCD) | D2 (Bore Ø) | K | H | H1 | C |
| 2” | 50 | 165 | 125 | 52 | 4 × Ø18 | 43 | 78 | 25 |
| 2-1/2” | 65 | 185 | 145 | 67 | 4 × Ø18 | 46 | 82 | 27 |
| 3” | 80 | 200 | 160 | 81 | 8 × Ø18 | 50 | 88 | 29 |
| 4” | 100 | 220 | 180 | 102 | 8 × Ø18 | 56 | 96 | 32 |
| 5” | 125 | 250 | 210 | 127 | 8 × Ø18 | 60 | 105 | 35 |
| 6” | 150 | 285 | 240 | 154 | 8 × Ø22 | 66 | 115 | 38 |
| Category | Parameter / Property | Specification / Value |
| Valve Details | Valve Type | Wafer Type Check Valve (Non-return) |
| Design Type | Single Disc, Spring-Loaded | |
| Flow Direction | Unidirectional | |
| Size Range | DN15 to DN200 (½” to 8”) | |
| Standards | ISO 15494, DIN 8077/8078, ASTM | |
| Operational Specs | Pressure Rating | PN6 – PN10 (6–10 bar) |
| Working Pressure | Up to 6–10 bar | |
| Temperature Range | 0°C to 90°C | |
| Cracking Pressure | < 0.3 bar (low opening pressure) | |
| Leakage Class | Class VI (bubble-tight sealing) | |
| Testing Pressure | 1.5 × PN (hydrostatic test) | |
| Material & Build | Body Material | PPH (Polypropylene Homopolymer) |
| Disc Material | PPH / PVDF (optional) | |
| Spring Material | Hastelloy C (corrosion-resistant alloy) | |
| Seal Material | EPDM / FKM (Viton) | |
| End Connection | Wafer type (fits between DIN / ANSI / ISO flanges) | |
| Design & Install | Structure | Slim wafer-type (space-saving) |
| Mounting | Horizontal or Vertical (upward flow preferred) | |
| Maintenance | Maintenance-free (no moving external parts) | |
| Installation | Easy installation between flanges | |
| PPH Properties | Chemical Resistance | Excellent (Acids, Alkalis, Solvents, Chlorinated media) |
| Thermal Stability | Suitable for temperatures up to 90°C | |
| Surface Finish | Smooth, corrosion-resistant | |
| Weight | Lightweight, compact design | |
| General Info | Color | Light Grey |
| Applications | Chemical processing, water treatment, acids, alkalis |
- Excellent Corrosion Resistance
Combination of PPH body and Hastelloy C spring provides superior resistance to acids, chlorides, and aggressive chemicals - Wafer-Type Compact Design
Slim, lightweight construction allows easy installation between flanges, saving space in piping systems - Fast Closing Mechanism
Spring-assisted operation ensures quick closure, preventing backflow and water hammer - Reliable Non-Return Function
Allows flow in one direction and automatically blocks reverse flow, protecting pumps and pipelines - Low Cracking Pressure
Opens at very low pressure, ensuring smooth flow and energy efficiency - Maintenance-Free Operation
Simple internal design with no external actuation, reducing maintenance needs - Leak-Proof Sealing
High-quality sealing materials provide tight shut-off and minimal leakage - Lightweight & Easy Handling
Non-metallic PPH construction makes it easy to install and handle - Flexible Installation
Can be installed in horizontal or vertical pipelines - Durable & Long Service Life
Strong resistance to corrosion, wear, and harsh environments ensures long-lasting performance
| Category | Parameter / Valve Type | Specification / Capacity |
| Pressure Ratings | Standard PPH Wafer Check Valve | PN10 (10 bar / 145 psi) |
| High-performance models | PN10 – PN16 (10–16 bar) | |
| Compact designs | Up to 6 bar | |
| Pressure Derating | 20°C | 100% (Full rated pressure) |
| 60°C | ~60–70% of rated pressure | |
| 80–90°C | ~30–50% of rated pressure |
Custom Product Manufacturing Available
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 with Hastelloy C Spring
Excellent Corrosion Resistance
The PPH body + Hastelloy C spring provides outstanding resistance to acids, chlorides, and aggressive chemicals, ensuring long service life
Reliable Backflow Prevention
Designed as a non-return valve, it effectively prevents reverse flow, protecting pumps and pipelines from damage
Fast Closing (Anti-Water Hammer)
The spring-loaded mechanism ensures quick closure, reducing water hammer and pressure surges
Compact & Space-Saving Design
Wafer-type construction allows installation between flanges, making it ideal for tight piping layouts
Lightweight & Easy Installation
Non-metallic PPH material makes the valve lightweight and easy to handle, reducing installation effort
Low Cracking Pressure
Opens with minimal pressure, ensuring smooth flow and energy efficiency
Maintenance-Free Operation
Simple internal design with fewer moving parts results in low maintenance and high reliability
High Chemical Compatibility
Suitable for handling acids, alkalis, solvents, and corrosive fluids in industrial applications
Flexible Installation
Can be installed in horizontal or vertical pipelines, offering versatility in system design
Long Service Life
Combination of corrosion-resistant materials and durable construction ensures extended operational life
Types of PPH Wafer Check Valve with Hastelloy C Spring
Single Disc (Single Plate) Type
- Uses a single moving disc with spring assistance
- Simple design, compact and widely used
- Suitable for low to medium flow systems
Dual Plate (Double Disc) Type
- Contains two semi-circular plates that open and close with flow
- Provides faster response and reduced water hammer
- Used in larger pipelines and higher flow applications
Spring-Loaded (Axial / Silent Type)
- Uses a central spring (Hastelloy C) for quick closing
- Ensures silent operation and minimal pressure shock
- Ideal for pump discharge lines
EPDM Seated Type
- Suitable for water, mild chemicals, and general applications
- Good elasticity and cost-effective
FKM / Viton Seated Type
- Used for high temperature and aggressive chemicals
- Better chemical resistance than EPDM
Hastelloy C Spring Type (Standard)
- High resistance to acids, chlorides, and corrosive media
- Used in chemical and pharmaceutical industries
Heavy-Duty Spring Type
- Stronger spring for high-pressure or high-velocity systems
- Provides faster closing and improved protection
Standard Duty Type
- Used in water treatment and general chemical lines
High-Purity / Chemical Grade Type
- Designed for aggressive chemicals and clean processes
Anti-Water Hammer Type
- Special spring design to reduce surge and pressure shock
Applications of PPH Wafer Check Valve with Hastelloy C Spring
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?
Petron Thermoplast has selected the right provider of PPH 3 Way Ball Valve L Port Type to require balancing material quality, actuation needs, and system compatibility. For high-performance applications involving steam, chemicals, or automated control. Petron Thermoplast is a certified valves dealer to deliver the optimal reliability. While the entry level of options exists for non-critical uses, investing in a well-engineered valve reduces downtime and maintenance costs over time.
Durable Materials
PPH for corrosive or hygienic applications.
Precision Engineering
Tight sealing and accurate flow control.
Customizable Options
PPH, manual or actuated, with unions or flanges.
Easy Maintenance
Union connections for quick servicing.
API-Compliant
Meets industry standards for safety and quality.
