UPVC Check Valve

UPVC check valves are the essential components of fluid control systems. They had to play a crucial role in the reverse of fluid flow within the pipelines and piping systems. UPVC check valves are popular as non-return valves or one-way valves. They work on differential pressure. It means the UPVc check valve will open only if the upstream pressure is more than the downstream pressure. In situations where the downstream pressure is higher, the valve will close, preventing reverse flow.

UPVC check valves are used in a wide range of industries and applications to ensure the efficiency, safety, and integrity of fluid systems. This valve is ideal for use in corrosive and chemical environments due to its excellent chemical resistance and non-metallic structure. The UPVC check valve is lightweight and durable, making it suitable for water treatment, irrigation, and various industrial applications.

UPVC Check Valve Details

d → Nominal Pipe Size (inches)
DN → Diameter Nominal (mm)
PN → Pressure Nominal / Pressure Rating (Bar)
E → Total Length / End-to-End Dimension (mm)
H → Overall Height of Valve (mm)
L → Socket Depth / Insertion Length (mm)
Z → Installation Length / Center-to-End Distance (mm)
g → Weight of Valve (grams)

Size (Inch)	DN (mm)	PN (bar)	L	H	D1	D2	Weight/Other
3/8″	10	16	54	78	14.5	49	153
1/2″	15	16	54	82	16.5	49	148
3/4″	20	16	63	91	19	53	190
1″	25	16	72	103	22.5	58	130
1 1/4″	32	16	85	120	26	68	460
1 1/2″	40	16	100	139	30	79	675
2″	50	16	118	174	36	102	1080
2 1/2″	65	16	157	211	44.5	122	2839
3″	80	16	174	248	48	152	3597
4″	100	16	212	283	57.5	168	6289

Parameter	Specification / Typical Value	Remarks
Valve Type	Check Valve (Non-Return Valve)	Allows one-way flow, prevents backflow
Design Types	Ball Type / Swing Type / Spring Type	Depends on application
Body Material	UPVC (Unplasticized Polyvinyl Chloride)	High corrosion resistance
Disc / Ball	UPVC / PP / EPDM-coated	Ensures proper sealing
Seal Material	EPDM / FKM (Viton)	Leak-proof and chemical resistant
Size Range	½” to 6” (15 mm to 160 mm)	Standard industrial sizes
Pressure Rating	PN10 (up to 10 bar / 150 psi)	At 20°C
Operating Temp	0°C to 60°C	Suitable for UPVC systems
End Connections	Socket (SW), Threaded (BSP/NPT), Flanged	As per DIN / ASTM standards
Installation	Horizontal or Vertical (upward flow)	Ensures proper operation
Flow Direction	Unidirectional (marked on body)	Prevents reverse flow
Mechanism	Automatic (pressure-operated)	No manual control required
Standards	ASTM, DIN, ISO	Industrial compatibility
Color	Grey / Light Grey	Standard UPVC appearance
Corrosion Res.	Excellent	Suitable for acids, alkalis, salts
Weight	Lightweight	Easy handling and installation
Maintenance	Low	Simple design, long service life
Applications	Water, irrigation, chemical & industrial	Widely used in fluid systems

Non-Return Function: Prevents backflow automatically, safeguarding equipment and system integrity.
Corrosion & Chemical Resistant: UPVC material resists acids, alkalis, and aggressive media.
Low Maintenance: No manual intervention required; simple and reliable operation.
Durable Construction: Long service life with high impact strength and wear resistance.
Leak-Proof Sealing: Precision seat and disc ensure tight sealing to eliminate leakage.
Compact & Lightweight: Easy to install and integrate into existing systems.
Multiple End Connections: Available in socket, threaded, and flanged options to suit different system requirements.

Nominal Size (DN)	Pipe Size (inch)	Typical Pressure Rating	PN Class
DN15	½”	16 bar (232 psi)	PN16
DN20	¾”	16 bar (232 psi)	PN16
DN25	1″	16 bar (232 psi)	PN16
DN32	1¼”	16 bar (232 psi)	PN16
DN40	1½”	16 bar (232 psi)	PN16
DN50	2″	16 bar (232 psi)	PN16
DN65	2½”	10 bar (145 psi)	PN10
DN80	3″	10 bar (145 psi)	PN10
DN100	4″	10 bar (145 psi)	PN10
DN125	5″	6–10 bar (87–145 psi)	PN6–PN10
DN150	6″	6 bar (87 psi)	PN6

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 Check Valve

Corrosion Resistant

UPVC check valve does not rust, pit, or scale, also making it ideal for water, wastewater, and many chemical applications.

Lightweight

UPVC is much lighter than metal valves, so it is easier to handle, transport, and install.

Low Cost

These are generally cheaper than metal or specialty plastic valves, both in initial cost and installation.

Low Maintenance

No corrosion means fewer failures, longer service life, and minimal upkeep.

Smooth Internal Surface

They reduce the pressure loss and prevent the buildup or fouling inside the valve.

Good Chemical Compatibility

Upvc Check Valves are suitable for acids, alkalis, salts, and many industrial and chemical applications.

Electrical & Thermal Insulation

They are non-conductive, so there are no galvanic corrosion and stray current issues.

Quiet Operation

Especially true for ball-type or spring-loaded designs—less water hammer compared to metal valves.

Easy Installation

The availability of easy installation with threaded, flanged, and socket ends makes it simple to join using methods like solvent cementing.

Non-Contaminating

Upvc check valve not to leach metals into the fluid and safe for potable water in approved grades.

Types and Uses of UPVC Check Valve

Swing Check Valves

The symbol has an arc or semicircle to show the swinging motion of the valve disc.

Ball Check Valves

The symbol features a ball inside the valve body outline to represent the ball’s movement.

Diaphragm Check Valves

The symbol has a curved line or diaphragm to show the flexible diaphragm controlling the flow.

Wafer Check Valves

The compact symbol between two parallel lines shows the valve is placed between flanges.

Lift Check Valves

The symbol includes a perpendicular line or dot to indicate the lifting mechanism that controls the flow.

Why Choose Petron Thermoplast?

At Petron Thermoplast, the UPVC check valves are an important industrial valve for unidirectional flow in fluid systems by preventing backflow. These valves function accurately, responding to pressure variations, unlike electric gate valves. This makes them indispensable in applications requiring continuous flow without active control.