UPVC Wafer Check Valve with Hastelloy C Spring

A UPVC Wafer Check Valve with Hastelloy C Spring is a non-return valve which is designed to fit between two flanges without any bulky bodies, and it’s a compact, space-saving design to prevent the use of reverse flow in water fluid systems. This rapid helps to help and avoid the backflow and reduce the water hammer or system shock. The Hastelloy-C spring refers to the spring element being made from a Hastelloy C alloy, which is a nickel-based corrosion-resistant superalloy that excels in aggressive environments such as acids, chlorides, and oxidising chemicals.

The UPVC Wafer Check Valve with Hastelloy C Spring is a compact, high-performance non-return valve designed to allow unidirectional flow and prevent reverse flow in piping systems. This valve is corrosion-resistant and chemically stable to ideal for aggressive water fluid applications. The inclusion of a Hastelloy C spring enhanced its durability and chemical resistance, making it suitable for demanding industrial processes, including those involving highly corrosive media.

UPVC 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

Parameter	Specification / Property
Valve Type	Wafer Type Check Valve (Spring Loaded, Non-Return)
Body Material	UPVC (Unplasticized Polyvinyl Chloride)
Spring Material	Hastelloy C (High corrosion resistance)
Disc Material	UPVC / PP / PVDF
Seat / Seal Material	EPDM / FKM (Viton)
End Connection	Wafer Type (Fits DIN / ANSI / JIS flanges)
Operation	Automatic (Spring-assisted closing)
Flow Direction	Uni-directional
Size Range	DN40 – DN315 (1½” – 12”)
Pressure Rating	PN10 (10 bar / 150 psi)
Temperature Range	0°C to 60°C
Cracking Pressure	~0.03 to 0.05 bar
Density	~1.38 – 1.45 g/cm³
Corrosion Resistance	Excellent (Acids, alkalis, and salts)
Mechanical Strength	High tensile strength and rigidity
Thermal Conductivity	Low (Good insulation properties)
Surface Finish	Smooth internal bore (Reduces friction/scaling)
Weight	Lightweight (Easy handling between flanges)
Standards	ISO, ASTM, DIN compliant
Applications	Chemical processing, water treatment, pharmaceuticals

Compact Wafer Design: Slim profile enables easy installation between flanges, saving space in piping layouts.
Hastelloy C Spring: Superior resistance to corrosion from aggressive acids, oxidizers, and chlorides.
Corrosion-Resistant Body: UPVC ensures long-term performance in corrosive environments.
Low Opening Pressure: Enables quick response to flow changes with minimal pressure loss.
Backflow Prevention: One-way valve mechanism prevents reverse flow and protects equipment.
No External Actuation Required: Automatically operates based on flow direction and pressure.
Lightweight & Non-Metallic: Easy handling and installation; suitable for non-metallic piping systems.

Valve Size (DN)	Valve Size (Inch)	Pressure Rating @ 20 °C	Equivalent Rating
DN 15	½”	16 bar	PN16 / 232 psi
DN 20	¾”	16 bar	PN16 / 232 psi
DN 25	1″	16 bar	PN16 / 232 psi
DN 32	1¼”	16 bar	PN16 / 232 psi
DN 40	1½”	16 bar	PN16 / 232 psi
DN 50	2″	16 bar	PN16 / 232 psi
DN 65	2½”	10 bar	PN10 / 145 psi
DN 80	3″	10 bar	PN10 / 145 psi
DN 100	4″	10 bar	PN10 / 145 psi
DN 125	5″	10 bar	PN10 / 145 psi
DN 150	6″	10 bar	PN10 / 145 psi

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 UPVC Wafer Check Valve with Hastelloy C Spring

1. Excellent Corrosion Resistance

UPVC body resists acids, alkalis, salts, and most industrial chemicals.
Hastelloy-C spring offers superior resistance to:
- Strong acids (H₂SO₄, HCl, HNO₃)
- Chlorides & oxidising media
Ideal for highly corrosive environments where SS springs fail.

2. Reliable Backflow Prevention

Spring-assisted design ensures fast and positive closure.
Prevents reverse flow, protecting:
- Pumps
- Pipelines
- Instrumentation
Reduces the risk of water hammer.

3. Long Service Life

Hastelloy-C spring has:
- High fatigue strength
- Excellent stress-corrosion cracking resistance
UPVC does not rust, scale, or pit → minimal maintenance.

4. Lightweight & Compact Design

Wafer-type construction fits easily between flanges.
Requires less space than swing or lift check valves.
Easy handling and installation.

5. Cost-Effective for Corrosive Media

Much lower cost than full-metal exotic alloy valves.
Provides Hastelloy-level corrosion protection where it matters most (the spring).

6. Low Cracking Pressure

Spring design allows operation at low flow rates.
Suitable for:
- Vertical or horizontal installation
- Low-pressure chemical transfer lines

7. Wide Industrial Compatibility

Used in:

Chemical & process industries
Water & wastewater treatment
Acid/alkali dosing systems
Effluent treatment plants (ETP)
Desalination & RO plants

8. Smooth Flow & Low Pressure Drop

Streamlined disc design reduces turbulence.
Improves system efficiency.

9. Easy Installation & Replacement

No special tools required.
Simple sandwich mounting between flanges.
Easy spring replacement if required.

10. Standards Compliance

Typically available in:
- DIN PN10 / PN16
- ANSI Class 150 (limited)
- Compatible with common piping systems.

Types of UPVC Wafer Check Valve with Hastelloy-C Spring

1. Single Disc (Piston / Lift Type) Wafer Check Valve with Hastelloy-C Spring

Spring-loaded disc moves axially
Fast closing, low reverse flow
Compact and lightweight
Chemical transfer lines
Dosing systems
Vertical & horizontal installations

2. Silent (Spring-Assisted) Wafer Check Valve with Hastelloy-C Spring

Guided disc with Hastelloy-C spring
Silent operation
Smooth, controlled closing
Pump discharge lines
RO & desalination plants
Systems sensitive to pressure surge

3. Dual Plate (Double Door) Wafer Check Valve with Hastelloy-C Spring

Two spring-loaded plates
Faster closing than swing check valves
Compact wafer design
Larger pipe sizes
Moderate pressure systems

3.Ball Type Wafer Check Valve (Spring-Loaded) with Hastelloy-C Spring

Spring-loaded ball made from uPVC / PTFE
Hastelloy-C spring ensures fast return
Minimal maintenance
Slurries
Wastewater
Effluent treatment lines

5. Full Bore Wafer Check Valve with Hastelloy-C Spring

Larger flow passage
Spring-assisted disc
Reduced turbulence
Low-pressure systems
High-flow chemical pipelines

6. High-Purity UPVC Wafer Check Valve

Smooth internal finish
PTFE or EPDM seals
Hastelloy-C spring for corrosion resistance
Semiconductor
Pharmaceutical
High-purity water systems

Why Choose Petron Thermoplast?

Petron Thermoplasts are easy to install. Extremely lightweight and compared to industrial connectors, but at the same time extremely durable, which can last you for decades to come. UPVC Wafer Check Valve with Hastelloy C Spring means no concern regarding Corrosion. Flow will be smoother and consistently more cost-effective in comparison to other components.

At Petron Thermoplast, we are committed to delivering high-quality products that meet industry standards and exceed customer expectations. Our products have been rigorously tested and certified through various tests to ensure their durability and performance.

Petron thermoplast is a wide range of UPVC Wafer Check Valves with Hastelloy-C Spring that can be used to extend the performance and versatility of our storage. Different sizes and types are available to suit various applications.