PPH Spring Check Valve
The PPH Spring Check Valve is a non-return valve engineered to prevent backflow in fluid systems by using a spring-loaded mechanism. Made from Polypropylene Homopolymer (PPH), this valve offers superior resistance to corrosive chemicals, high temperatures, and mechanical stress, making it suitable for demanding industrial and chemical processing applications.Its spring-assisted closing mechanism ensures quick, reliable shutoff even in vertical installations or low-flow systems. This valve is ideal for protecting pumps, pipelines, and sensitive equipment in both pressure and gravity-fed lines.
A PPH Spring Check Valve is made from Polypropylene Homopolymer (PPH) that is designed to allow fluid flow in one direction only and prevent backflow in a piping system. It uses an internal spring-loaded mechanism to automatically close the valve when the flow stops or reverses.
- Chemical Resistance
- Low Maintenance Requirement
- Low Thermal Conductivity
- Long Service Life
- Easy Installation
- Corrosion Resistance
PPH Spring Check Valve Details
d → Nominal Size (in inches)
DN → Diamètre Nominal (Nominal Diameter, in mm)
PN → Pressure Nominal (Pressure Rating, in bar)
E → End-to-End Length
H → Overall Height
L → Connection / Socket Length
Z → Center to End Distance
g → Weight (in grams)
| d | DN | PN | E | H | L | Z | g |
| 1/2″ | 15 | 16 | 54 | 96 | 22,5 | 51 | 149 |
| 3/4″ | 20 | 16 | 63 | 105 | 25,5 | 54 | 188 |
| 1″ | 25 | 16 | 72 | 117 | 28,7 | 59,5 | 292 |
| 1″ 1/2 | 40 | 16 | 100 | 147 | 35 | 77 | 640 |
| 1″ 1/4 | 32 | 16 | 85 | 136 | 32 | 72 | 445 |
| 2″ | 50 | 16 | 118 | 174 | 38,2 | 97,6 | 1010 |
| 2″ 1/2 | 65 | 16 | 157 | 211 | 44,5 | 122 | 2480 |
| 3″ | 80 | 16 | 174 | 248 | 48 | 152 | 3090 |
| 4″ | 100 | 16 | 212 | 283 | 57,5 | 168 | 5370 |
| Category | Parameter / Property | Specification / Value |
| Valve Details | Valve Type | Spring Loaded Check Valve (Non-Return Valve) |
| Operation | Self-actuated (spring-assisted closing) | |
| Flow Direction | Uni-directional (one-way flow) | |
| Cracking Pressure | Low (approx. 0.5–2 bar typical) | |
| Leakage Class | Bubble-tight (depending on seal) | |
| Operational Specs | Pressure Rating | Up to 10 bar (PN10) |
| Temperature Range | 0°C to +90°C / +100°C | |
| Installation | Horizontal or Vertical (upward flow preferred) | |
| Size Range | DN15 to DN150 (½” to 6”) | |
| Material & Build | Body Material | Polypropylene Homopolymer (PPH) |
| Disc / Poppet Material | PPH / PTFE | |
| Seal Material | EPDM / FKM (Viton) / PTFE | |
| Spring Material | Stainless Steel (SS316) / PTFE-coated | |
| Connection Type | Threaded / Socket Weld / Butt Weld / Flanged / Wafer | |
| Design Type | Wafer / Inline / True Union | |
| Applications | Use Cases | Chemical processing, water treatment, pump protection |
| Standards | DIN, ISO, ASTM compliant | |
| PPH Properties | Density | ~0.90–0.91 g/cm³ (lightweight) |
| Chemical Resistance | Excellent (Acids, Alkalis, Corrosive fluids) | |
| Mechanical Strength | High stiffness and good impact resistance | |
| Corrosion Resistance | Non-corrosive and rust-free | |
| Surface Finish | Smooth internal surface (low friction/scaling) | |
| Water Absorption | Very low | |
| UV Resistance | Good (suitable for outdoor use) |
- Spring-Loaded Design – Provides quick closing action to prevent reverse flow.
- Chemical Resistant Construction – Suitable for aggressive chemicals, acids, and alkalis.
- Vertical & Horizontal Installation – Functions reliably in any orientation.
- Low Opening Pressure – Operates effectively even under minimal flow conditions.
- Durable & Corrosion-Free – Non-metallic body ensures long service life.
- Maintenance-Friendly Design – Simple internal structure allows easy access and servicing.
- Silent Operation – Reduces water hammer and flow noise in systems.
| Parameter | Typical Value |
| Nominal Pressure Rating | PN10 (10 bar) |
| Working Pressure | Up to 10 bar (at 20°C) |
| Maximum Pressure | 10 bar (standard design) |
| Test Pressure | 1.5 × rated pressure (≈ 15 bar) |
| Cracking Pressure | ~0.1 to 0.5 bar (low opening 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 Spring Check Valve
1. Prevents Backflow Effectively
- Ensures one-way flow, protecting pipelines and equipment
- Prevents contamination and system damage caused by reverse flow
2. Fast Closing (Spring Action)
- Spring mechanism provides instant shut-off when flow stops
- Reduces risk of backflow before pressure drops completely
3. Reduces Water Hammer & Noise
- Quick and smooth closure minimizes water hammer effect
- Operates quietly compared to other check valves
4. Excellent Chemical Resistance
- Made from PPH material, suitable for acids, alkalis, and corrosive fluids
- Ideal for chemical and industrial applications
5. Low Maintenance & Long Life
- Simple internal design with fewer moving parts
- Resistant to corrosion, wear, and scaling
6. Compact & Space-Saving Design
- Inline and compact structure fits in tight piping layouts
- Suitable for skid-mounted and compact systems
7. Flexible Installation
- Can be installed in horizontal or vertical positions
- Not dependent on gravity (unlike swing check valves)
8. Protects Equipment
- Safeguards pumps, compressors, and pipelines from damage
- Maintains system efficiency and reliability
Types of PPH Spring Check Valve
1. Inline (Axial Flow) Spring Check Valve
- Installed directly in the pipeline (straight flow path)
- Compact and widely used
- Ensures smooth flow with minimal pressure loss
- Also called in-line or axial flow valve
2. Y-Type Spring Check Valve
- Designed in a Y-shape body
- Allows easier maintenance and cleaning
- Suitable for systems where servicing is required frequently
3. Ball Type Spring Check Valve
- Uses a spring-loaded ball as the closing element
- Good for handling viscous fluids or slurry
4. Wafer Type Spring Check Valve
- Slim and lightweight (flangeless design)
- Installed between two flanges
- Ideal for space-saving applications
5. Socket Weld / Plain End Type
- Used in permanent piping systems
- Leak-proof and strong joints
6. Threaded Type
- Easy to install and remove
- Suitable for small-size pipelines
7. Flanged Type
- Used for large pipelines and high-pressure systems
- Easy maintenance and replacement
Applications of PPH Spring 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, we are committed to sharing technical knowledge with our customers and the engineering community. We believe that knowledge leads to better decisions and longer-lasting systems. Petron Thermoplast PPH Spring Check Valve is an important part of any industrial filtration system, helping to protect the equipment, improve efficiency, and ensure reliable fluid flow.
A PPH Spring Check Valve in Petron Thermoplast is a simple but powerful way to boost performance and extend equipment life. Choose a PPH Spring Check Valve when volumes of solids are large and need to be filtered efficiently.
