UPVC True Union Ball Valve

UPVC True Union Ball Valve not only performs the basic function of fluid opening and closing, but also needs to consider ease of maintenance, sealing reliability, and long-term operational stability. They are used in a variety of applications such as chemical process Industries, aggressive acids, Mining & Mineral processing, pulp & paper, and plating & Oil Treatmen,t etc. Its exceptional smoothness of operation, coupled with low operating torque values, ensures trouble-free service and a long operational lifespan. This reduces torque requirements and makes handling easier.

There are a number of quality factors that are checked before the Upvc true union ball valve is sent to the client. When fabricating at our avant-garde facility. A wide range of oil, gas treatment, and chlorination applications benefit from the use of UPVC True Union Ball Valves. Its acidic, caustic, and chemical resistance is outstanding. In addition to chemical manufacturing of UPVC True Union Ball Valve, they are utilised in oil purification, plating and metal processing, pulp & paper manufacture, refineries, and energy stations.

UPVC True Union Ball Valve Details

C – Overall Top Width
C1 – Inner Top Width
B – Overall Height
L – End to Center Length
Z – Face to Center Dimension
H – Overall Length (Face to Face)
d – Inside Diameter
E – Center to Bottom Distance

Nominal Pipe Size (NPS)	Outside Diam. (D)	No. of Holes	Diam. of Holes	Bolt Circle (BC)	Weight (lb)
1/2″	3.50	4	0.62	2.38	2.55
3/4″	3.88	4	0.62	2.75	3.10
1″	4.25	4	0.62	3.12	4.11
1 1/4″	4.62	4	0.62	3.50	7.71
1 1/2″	5.00	4	0.62	3.88	9.07
2″	6.00	4	0.75	4.75	11.00

Parameter	Specification / Description
Valve Type	Ball Valve (Quarter-turn type)
Design	True Union (Double union ends for easy removal)
Body & Ball Material	UPVC (Unplasticized Polyvinyl Chloride)
Seat Material	PTFE (Teflon)
Seal / O-ring	EPDM / FKM (Viton)
Size Range	DN15 to DN100 (½″ to 4″)
Pressure Rating	PN16 (up to DN50) / PN10 (above DN65)
Temperature Range	0°C to 60°C
Operation Type	Manual (Lever operated) / Optional Actuated
End Connections	Socket, Threaded (BSP/NPT), Flanged
Mounting Pad	ISO 5211 (For direct actuator mounting)
Flow Type	Full Bore (Minimal pressure loss)
Flow Direction	Bi-directional
Rotation Angle	90° (Quarter-turn operation)
Standards	DIN / ASTM / BS compliant
Testing	100% Hydrostatic pressure tested

1. True Union Design

The valve body is made in three parts: two end connections + the central valve body.
Easy removal and maintenance: You can disassemble the valve without cutting the pipe.
Ideal for systems that need periodic cleaning or replacement.

2. Material

UPVC (Unplasticized Polyvinyl Chloride):
- Lightweight, durable, and corrosion-resistant.
- Suitable for oil, chemicals, and corrosive fluids.
Seals and Seats: Usually PTFE, EPDM, TPE, or Viton for chemical compatibility.

3. Flow Control

Ball valve mechanism: A hollow ball rotates 90° to allow or block flow.
Can be 2-way (on/off) or 3-way (diverting/mixing).
Full-port option: Minimal flow restriction, almost no pressure drop.

4. Connection Options

Socket/Solvent-Weld: For direct UPVC pipe joining.
Threaded (BSP/NPT): For screwed connections.
Flanged: For bolted, industrial piping.

5. Chemical and Temperature Resistance

Resistant to acids, alkalis, and many chemicals.
Generally suitable for temperatures up to 60–70°C, depending on design and seals.

6. Operation

Manual lever: Standard 90° rotation for ON/OFF operation.
Actuated options: Can mount electric or pneumatic actuators for automation.

7. Leak-Proof Design

Double O-ring or PTFE seat sealing ensures a tight shut-off.
Minimizes fluid leakage, even under pressure.

8. Durability and Maintenance

Long service life due to corrosion-resistant materials.
Maintenance-friendly: True union design allows valve removal without disturbing piping.

Valve Size (DN / Inch)	PN Rating (bar)	Max Working Pressure (at 25°C)	Temperature Derating Notes
15 mm / ½”	PN10 / PN16	10–16 bar	Decreases as temperature rises above 25°C
20 mm / ¾”	PN10 / PN16	10–16 bar	Decreases as temperature rises above 25°C
25 mm / 1″	PN10 / PN16	10–16 bar	Decreases as temperature rises above 25°C
32 mm / 1 ¼”	PN10 / PN16	10–16 bar	Decreases as temperature rises above 25°C
40 mm / 1 ½”	PN10 / PN16	10–16 bar	Decreases as temperature rises above 25°C
50 mm / 2″	PN10 / PN16	10–16 bar	Decreases as temperature rises above 25°C
65 mm / 2 ½”	PN10 / PN16	10–16 bar	Decreases as temperature rises above 25°C
80 mm / 3″	PN10 / PN16	10–16 bar	Decreases as temperature rises above 25°C
100 mm / 4″	PN10 / PN16	10–16 bar	Decreases as temperature rises above 25°C
150 mm / 6″	PN10 / PN16	10–16 bar	Decreases as temperature rises above 25°C
200 mm / 8″	PN10 / PN16	10–16 bar	Decreases as temperature rises above 25°C

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 True Union Ball Valve

1. Easy Installation and Removal

UPVC True union design allows the valve body to be easily detached from the pipeline without cutting pipes.
Simplifies maintenance, cleaning, and replacement of internal parts.

2. Corrosion and Chemical Resistance

Made from UPVC and PTFE, offering excellent resistance to acids, alkalis, salts, and other chemicals.
Ideal for chemical processing, Oil, gas treatment, and industrial systems.

3. Leak-Proof Performance

PTFE (Teflon) seats provide a tight shut-off.
Ensures zero leakage under normal operating pressures.

4. Lightweight

Lighter than metal valves, reducing installation effort and structural load.

5. Low Maintenance

Resistant to rust, corrosion, and scaling, which minimizes maintenance frequency and cost.
UPVC True union design allows internal inspection without disrupting the pipeline.

6. Versatility

Available in manual or pneumatic actuation, and in 2-way or 3-way configurations.
Suitable for varied applications, including potable oil, industrial chemicals, and irrigation.

7. Safety and Automation

Pneumatic variants allow remote or automated operation, reducing operator exposure in hazardous environments.
Single-acting valves provide fail-safe operation on air loss.

8. Cost-Effective

Lower initial cost compared to metal valves.
Long life and low maintenance contribute to reduced total cost of ownership.

9. Durable

Resistant to UV rays and weather conditions, making it suitable for outdoor or exposed installations.

Types of UPVC True Union Ball Valve

1. By Connection Type

Socket/Socket‑Weld True Union Ball Valve – Designed to be solvent‑welded directly into UPVC pipework. Easy removal thanks to union design. Often, one of the most common types.
Threaded True Union Ball Valve – With BSP/NPT threads at ends, ideal when you want a screwed connection.
Flanged True Union Ball Valve – Flanges on ends make it suitable for industrial piping with bolts & gaskets.

2. By Flow Path / Function

Standard 2‑Way True Union Ball Valve – Most common type, with a single inlet and outlet for straight shut‑off service.
Full‑Port / Full‑Flow Union Ball Valve – Larger internal bore with minimal flow resistance, good for systems needing maximum flow.
3‑Way True Union Ball Valve (L or T Port) – Provides diverting or mixing flow paths (useful for bypass or multiple‑direction installations).

3. By Seat / Seal Material

PTFE (Teflon) Seats – Excellent chemical resistance and smooth operation.
TPE / EPDM Seals and O‑Rings – Good for mild chemical service.
Viton (FPM) O‑Rings – Higher chemical and temperature resistance where needed.

4. By Additional Features / Operation

Pneumatic or Electric Actuated True Union Ball Valves – Suitable for automated systems. Actuators can be mounted without modifying the valve body thanks to the true union design.
Double True Union Ball Valve – Enhanced sealing/performance with thicker body and robust structure, often for more demanding industrial situations.

Why Choose Petron Thermoplast?

Petron Thermoplast provides the UPVC True Union Ball Valve, which is not simply an upgraded version of a ball valve, but a specialized valve designed for piping systems with high maintenance and stability requirements. Its double-joint structure achieves:

Quick assembly and disassembly

Reduced maintenance costs

Improved system reliability

Extended pipeline lifespan

In modern plastic piping engineering, double-joint Upvc True Union Ball Valves have become a standard feature in oil, gas treatment, chemical, agricultural, and industrial fluid systems.