UPVC Pneumatic Actuated Diaphragm Valve

UPVC Pneumatic Actuated Diaphragm Valves represent innovation and excellence in engineering in the field of flow control technologies. They are designed to meet the rigorous demands of industrial applications, so these valves excel in the transmission and regulation of corrosive media, and they offer unparalleled reliability and performance. UPVC Pneumatic Actuated Diaphragm Valve bodies are exceptionally resistant to corrosion, but ensure longevity and consistent operation in environments where traditional metal valves would falter.

So these UPVC Pneumatic Actuated Diaphragm Valves provide precise control over flow rates, and enable swift and efficient modulation or complete shut-off of fluid streams as required by process conditions. So the actuation system is optimized for seamless integration into automated control systems and allows for remote operation and monitoring, thus enhancing operational safety and efficiency. The innovative design incorporates a flexible diaphragm that acts as a sealing element, eliminating the need for packing glands and significantly reducing the risk of leakage. This feature, combined with the valve’s streamlined internal geometry, minimizes pressure drops and facilitates the smooth passage of fluids, making it an ideal choice for applications ranging from water treatment to chemical processing.

UPVC Pneumatic Actuated Diaphragm Valve Details

B: Total vertical height of the assembly.
$B_1$ : Distance from the valve centerline to the bottom of the body.
C: Height from the valve centerline to the base of the actuator.
$C_1$ : Distance between the centers of the pneumatic ports
d: Inner diameter of the pipe connection.
E: Outer diameter of the union nut.
H: Overall face-to-face length of the valve assembly.
$H_h$ : Width/diameter of the actuator housing.
L: Distance between the inner faces of the union ends.
$R_a$ : Pneumatic port connection size.
$R_1$ : External thread diameter of the valve body.
Z: Face-to-face length of the central valve body.

d	DN	PN	B	B1	C	C1	E	H	H1	L	R1	Ra	Z
20	15	10	148	25	66	24	41	129	97	90	1”	1/4”	100
25	20	10	151	30	69	24	50	154	97	108	1”1/4	1/4”	116
32	25	10	159	33	78	24	58	168	97	116	1”1/2	1/4”	124
40	32	10	163	30	82	24	72	192	97	134	2”	1/4”	140
50	40	10	207	35	112	24	79	222	126	154	2”1/4	1/4”	160
63	50	10	245	46	142	24	98	266	157	184	2”3/4	1/4”	190

Parameter	Specification / Details
Valve Type	Diaphragm Valve (Pneumatically Actuated)
Body Material	UPVC (Unplasticized Polyvinyl Chloride)
Diaphragm Material	EPDM / PTFE / FKM (Viton)
Actuator Type	Pneumatic (Single Acting / Double Acting)
Operation Mode	Normally Closed (NC) / Normally Open (NO)
Working Principle	Compressed air actuates diaphragm to control flow
Size Range	½” to 10” (15 mm to 250 mm)
Pressure Rating	PN10 (≈10 bar / 150 PSI)
Air Supply Pressure	3 – 8 bar (Typical)
Temperature Range	0°C to 60°C
End Connections	Flanged / Socket / Union
Sealing Type	Soft sealing (Flexible leak-proof diaphragm)
Flow Characteristics	Linear / Near-linear flow control
Cycle Life	High (Up to 500,000 cycles)
Corrosion Resistance	Excellent (Acids, alkalis, and salts)
Design Type	Weir type / Straight-through design
Surface Finish	Smooth internal bore (Prevents scaling)
Standards	DIN / ANSI / ISO compliant
Mounting Standard	ISO 5211 (Actuator mounting)
Automation	Full remote automation capability

Pneumatic Automation: Enables remote, high-speed actuation for automated process control.
Corrosion-Resistant Body: UPVC construction offers excellent resistance to acids, bases, and aggressive chemicals.
Leak-Free Performance: Flexible diaphragm provides tight sealing and prevents media contamination.
Flanged or Socket Ends: Available with standardized connections for easy installation.
Modular Design: Compatible with positioners and limit switches for advanced control.
Low Maintenance: Simplified internal components reduce wear and servicing needs.
Silent Operation: Diaphragm mechanism ensures smooth and quiet flow control.

Parameter	Typical Rating	Unit	Remarks
Nominal Pressure Class	PN10	bar	Most common rating for UPVC diaphragm valves
Maximum Working Pressure @ 20 °C	10	bar	Full pressure rating at ambient temperature
Maximum Working Pressure @ 40 °C	~6 – 7	bar	Pressure derating due to temperature
Maximum Working Pressure @ 60 °C	~3 – 4	bar	Upper temperature limit for UPVC
Test Pressure (Hydrostatic)	15	bar	Typically 1.5 × working pressure
Minimum Operating Pressure	0	bar	Can operate at zero pressure
Actuator Air Pressure (Control)	4 – 8	bar	Required pneumatic supply pressure
Vacuum Rating	Up to full vacuum	—	Depends on diaphragm & support design

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 Pneumatic Actuated Diaphragm Valve

1. Excellent Chemical & Corrosion Resistance

UPVC body resists corrosion, rust, and scaling
Suitable for water, wastewater, acids, alkalis, and mild chemicals

2. Bubble-Tight Shut-Off

Diaphragm provides 100% leak-proof sealing
Ideal for applications requiring zero leakage

3. Fast & Reliable Operation

Pneumatic actuation allows quick opening and closing
Suitable for automated and remote-controlled systems

4. Low Maintenance Design

Few moving parts
Diaphragm can be replaced easily without removing the valve body from the pipeline

5. Safe for Hazardous & Clean Media

No stem penetration through the flow path
Prevents contamination and leakage to the atmosphere

6. Lightweight & Easy Installation

UPVC construction is much lighter than metal valves
Reduces installation time and structural load

7. Good Flow Characteristics

Smooth internal surfaces minimize pressure drop
Suitable for slurry-free liquids and viscous fluids

8. Wide Range of Applications

Water treatment plants
Chemical processing
Pharmaceutical & food (non-oil, low-temp use)
Effluent treatment & dosing systems

9. Energy Efficient Automation

Uses compressed air instead of electric power
Safe in wet or explosive environments

10. Cost-Effective Compared to Metal Valves

Lower material and maintenance costs
Long service life in corrosive environments

Types of UPVC Pnuematic Acuated Diaphragm Valve

1. Normally Closed (NC) Type

Valve remains closed when no air supply is applied
Opens when pneumatic air pressure is supplied
Fail-safe design in case of air failure

2. Normally Open (NO) Type

Valve remains open without air supply
Closes when pneumatic air pressure is applied

3. Double-Acting Pneumatic Diaphragm Valve

Uses air pressure to both open and close the valve
Faster operation and precise control
No spring return mechanism.

4. Single-Acting Pneumatic Diaphragm Valve

Air pressure operates valve in one direction
Spring returns valve to default position (NC or NO)

5. Weir Type Diaphragm Valve (UPVC)

Raised weir inside the valve body
Excellent sealing and minimal dead space

6. Straight-Through (Full Bore) Diaphragm Valve

Straight flow path with no weir
Lower pressure drop and better solids handling

Pneumatic Diaphragm Valve with Positioner

Fitted with valve positioner for modulating control
Allows precise flow or pressure regulation

8. On–Off Pneumatic Diaphragm Valve

Simple open/close operation
No throttling or modulation

Why Choose Petron Thermoplast?

Petron Thermoplast UPVC Pneumatic Actuated Diaphragm Valves are efficient, reliable, and essential tools in industrial automation, offering precise control of flow, pressure, and temperature. Proper selection, correct installation, and regular maintenance to ensure that these valves perform optimally in practical applications. As industrial automation technology continues to advance, UPVC Pneumatic Actuated Diaphragm Valve will see broader applications and improved performance, providing a reliable foundation for safe, efficient, and stable production.