UPVC Butterfly Gear Type Valve

A UPVC Butterfly Gear Type Valve is a quarter-turn control flow valve made from unplasticized polyvinyl chloride (uPVC), in which a disc rotating on a shaft regulates and isolates the flow of fluid, and this valve is operated using a gear mechanism (gearbox) for smooth and controlled opening and closing, especially in larger sizes. Their compact design allows for cost-effective operation in various applications. The gear mechanism of the UPVC Butterfly Gear Type Valve plays a pivotal role in the operation and performance of the valve, ensuring that the valve opens and closes smoothly and precisely.

The UPVC Butterfly Gear Type Valve is a high-performance valve designed for precise flow control and shut-off in large-diameter piping systems. These valves feature a manual gear-operated mechanism that allowing to easy and accurate operation. It is suitable for industrial applications involving oil, gas, chemicals, and other aggressive fluids, offering reliability and long service life. The valve’s design allows for easy integration into pipeline systems, and the choice of gear mechanism is crucial in ensuring smooth operation and reliable performance.

UPVC Butterfly Gear Type Valve Details

D: Pipe outer diameter
DN: Nominal internal diameter
OP: Operating pressure range
De: Total outside diameter
Z: Valve body thickness
Di: Internal flow diameter
A: Seating surface diameter
B: Disc opening clearance
C: Lower body extension

D	DN	OP	De	Z	Di	A	B	C
50	40	0-5	95	16	22	72	25	28
63	50	0-5	109	20	32	86	37	29
75	65	0-5	129	20	40	105	50	31
90	80	0-5	144	20	54	119	61	32
110	100	0-5	164	22	70	146	77	31
140	125	0-5	195	23	92	173	94	35
160	150	0-5	220	25	105	197	100	40
225	200	0-5	275	35	154	255	152	38
280	250	0-5	330	40	192	312	180	41
315	300	0-5	380	45	227	363	215	41

Parameter	Specification
Product Name	uPVC Butterfly Gear Type Valve
Valve Type	Butterfly Valve
Operation	Gear Operated (Worm Gear Box)
Body Material	uPVC (Unplasticized Polyvinyl Chloride)
Disc Material	uPVC
Stem / Shaft Material	Stainless Steel (SS 304 / SS 316)
Seat / Liner Material	EPDM / NBR
Size Range	40 mm to 300 mm (1½″ to 12″)
Pressure Rating	PN6 / PN10
Maximum Working Pressure	Up to 6–10 bar @ 27°C
Operating Temperature	0°C to 60°C
End Connection	Wafer Type
Face to Face	As per ISO / DIN Standards
Flow Control	Bi-directional
Operation Angle	90° (Quarter Turn)
Leakage Class	Bubble-tight
Mounting	Inline
Media	Oil, Gas, Chemicals, Acids, Alkalis
Handle / Gear Box Material	Cast Iron / Aluminum
Coating (Gear Box)	Epoxy Coated
Color	Grey
Standards	ISO / DIN / ASTM
Application	Oil, Gas Treatment, Chemical Plants, Irrigation, Effluent Systems
Gear Box Material	Cast Iron / Aluminium (Epoxy Coated)
Valve Colour	Grey
Density (uPVC)	1.38 – 1.45 g/cm³
Hardness	Rigid / High
Tensile Strength	45–55 MPa
Flexural Strength	High
Impact Strength	High
Thermal Conductivity	Low
Water Absorption	< 0.1%
Corrosion Resistance	Excellent
UV Resistance	Moderate (improved with additives)
Electrical Conductivity	Non-conductive
Odor / Taste	Odourless & Non-toxic
Weight	Lightweight (varies with size)
Flame Retardancy	Self-extinguishing
Dimensional Stability	Excellent
Rusting	Non-rusting

Gear-Operated Mechanism
Worm gear reduces operating torque, enabling easy operation of large-diameter valves.
Quarter-Turn Valve
90° rotation of the disc allows quick open/close operation.
UPVC Body & Disc
Lightweight, corrosion-resistant, and suitable for chemicals, oil, gas, and effluent systems.
Resilient EPDM / NBR Seat
Provides bubble-tight sealing and long service life.
Wafer or Lug Type Design
Flexible mounting options between flanges, compact and space-saving.
Bi-Directional Flow
Can handle flow from either direction, depending on installation.
Smooth Flow Control
Gear operation allows gradual opening and closing, preventing chemical hammering.
Low Maintenance
Durable material and fewer moving parts minimize upkeep.
Lightweight Construction
Easier to handle and install compared to metal butterfly valves.
Wide Application Ranges
Suitable for oil, gas treatment, irrigation, chemical processing, and effluent systems.

Valve Size (mm / inch)	Pressure Rating (PN)	Maximum Working Pressure @ 27°C
40 mm (1½″)	PN10	10 bar
50 mm (2″)	PN10	10 bar
65 mm (2½″)	PN10	10 bar
80 mm (3″)	PN10	10 bar
100 mm (4″)	PN10	10 bar
125 mm (5″)	PN10	10 bar
150 mm (6″)	PN10	10 bar
200 mm (8″)	PN10	10 bar
250 mm (10″)	PN10	10 bar
300 mm (12″)	PN10	10 bar

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 Butterfly Gear Type Valve

Easy Operation for Large Sizes

The gear (worm gear) mechanism reduces operating torque, making the valve easy to open and close even in larger diameters.

Excellent Corrosion Resistance

UPVC body and disc resist corrosion, chemicals, acids, and alkalis, ensuring long service life.

Smooth & Controlled Flow Regulation

Gear operation allows gradual opening and closing, preventing chemical hammering.

Leak-Proof Sealing

Soft EPDM / NBR liner provides bubble-tight shut-off.

Lightweight Construction

Much lighter than metal butterfly valves, reducing installation effort and pipe stress.

Low Maintenance

Non-rusting material and fewer moving parts minimize maintenance requirements.

Compact & Space Saving

Wafer-type design requires minimal space between flanges.

Bi-Directional Flow

Can be installed in either flow direction.

Cost Effective

Lower purchase and lifecycle costs compared to metal gear-operated valves.

Wide Application Range

Suitable for oil & gas treatment, chemical processing, effluent lines, irrigation, and swimming pools.

Types of UPVC Butterfly Gear Type Valve

1. Wafer-Type UPVC Butterfly Gear Type Valve

Thin, lightweight wafer-style body.
Positioned between two flanges and held by flange bolts.
Most common for low-pressure oil, gas, and chemical pipelines.
Space-saving, cost-effective.

2. Lug Type UPVC Butterfly Gear Type Valve

The body has threaded inserts (lugs) on both sides.
Can be bolted at one flange independently or installed between flanges.
Suitable for dead-end service where downstream piping may be removed.
Provides more flexibility in piping system maintenance.

3. Resilient Seated UPVC Butterfly Gear Type Valve

Rubber-lined seat (EPDM / NBR) for tight sealing.
Ensures bubble-tight shut-off.
Ideal for oil, gas, chemicals, and effluent lines.

4. Double / Triple Eccentric (Metal Seated) UPVC Butterfly Gear Type Valve

Eccentric disc moves slightly off-center for minimal seat wear (less common in uPVC, mostly in metal valves).
Reduces friction, allows higher pressure and temperature operation.

3. Resilient Seated UPVC Butterfly Gear Type Valve

Rubber-lined seat (EPDM / NBR) for tight sealing.
Ensures bubble-tight shut-off.
Ideal for oil, gas, chemicals, and effluent lines.

Why Choose Petron Thermoplast?

At Petron Thermoplast, we are providing the different butterfly valve gear types—manual, electric, pneumatic, and hydraulic—which allow industry professionals to select the best valve gear mechanism for their specific needs. Each UPVC Butterfly Gear Type Valve has distinct benefits and limitations that affect valve performance, maintenance, and long-term reliability. By considering factors such as valve size, pressure requirements, automation needs, and cost, companies can make informed decisions that lead to more efficient and reliable fluid control systems. For expert guidance on choosing the right UPVC Butterfly Gear Type Valve for your industry needs, and ensure optimal performance and reliability.

UPVC Pipe Fittings

We offer UPVC Pipe Fittings products in all standard sizes and provide complete customization options to meet your specific project requirements across our entire product range.