Effiziente und langlebige Kunststoff-Schmetterlings ventile

Plastic butterfly valves are lightweight, corrosion-resistant valves primarily used to control or regulate the flow of fluids. They consist of a disc-shaped butterfly plate mounted at the center axis of the pipeline, which is rotated to open, close, or throttle the flow. Plastic butterfly valves are widely used across various low-pressure fluid control systems such as in chemical, water treatment, food and beverage, pharmaceutical industries due to their compact structure, ease of installation, and excellent chemical resistance.

Plastic butterfly valves are designed for easy operation, with manual, electric, or pneumatic devices available to effortlessly control the rotation of the butterfly plate, allowing for quick and precise adjustment of fluid flow. Additionally, they are low maintenance, with their main components made from corrosion-resistant materials, offering a long service life under normal operating conditions.

Specifications
Video

Specification

Butterfly Valve
887 Type Pneumatic Butterfly Valve
987 Type Electric Butterfly Valve

A standard plastic butterfly valve on white background.

A dimension drawing of standard plastic butterfly valve.

Table 1: Size Tables of Butterfly Valve
Nominal Diameter	D1 (mm)	D2 (mm)	D3 (mm)	H (mm)	H3 (mm)	H1 (mm)	K (mm)
DN50	48	125	160	225	100	145	190
DN65	63	145	180	245	112	155	190
DN80	78	160	196	270	120	172	240
DN100	98	180	228	308	140	194	240
DN125	122	210	258	352	168	223	310
DN150	146	240	287	382	181	239	310
DN200	200	295	343	470	242	300	310

Features

Gear-type double piston, large output torque, small volume
The cylinder is made of aluminum alloy material, which is light weight and beautiful in appearance
Excellent corrosion resistance and aging resistance

Table 2: Technical Parameters and Performance of 887 Type Pneumatic Butterfly Valve
Actuator Parameters		Valve Body Parameters
Type	Double acting piston type, spring return type	Nominal Diameter	DN50 – DN300
Air Pressure	Double acting: 2–8 bar	Nominal Pressure	PN 1.0 MPa
Air Pressure	Single acting: 4–8 bar	Nominal Pressure	PN 1.0 MPa
Output Torque	Double acting: 4–10560 N·M	Valve Stem Material	UPVC / CPVC / PP / PVDF / ABS
Output Torque	Single acting: 7–2668 N·M	Valve Body Material	UPVC / CPVC / PP / PVDF / ABS
Operating Temperature	Normal Temperature Type: -20 °C to +80 °C (NBR O-ring)	Disc Material	UPVC / CPVC / PP / PVDF / ABS
Operating Temperature	High Temperature Type: -20 °C to +160 °C (Fluorine rubber O-ring)	Seat Seal	PTFE / EPDM / FPM
Stroke Range	0° to 90°, ±5°	Temperature	UPVC < 60 °C PVDF < 140 °C CPVC < 90 °C PP < 80 °C
Interface Thread	GTD40 – GTD83 / ATD50 – ATD88 G1/8"	Connection Method	Flange
Interface Thread	GTD110 – GTD350 / ATD100 – ATD200 G1/4"	Applicable Medium	Water and various corrosive fluids
Valve Position Signal	Locator: 4–20 mA Feedback Signal: fully open or fully closed signal	Features	Compact structure, small size, light weight, easy installation

Features

Compact and beautiful appearance
Light weight, easy installation, smooth inner wall, low friction resistance
Material is hygienic, non-toxic, aging resistant, and corrosion resistant

Table 3: Technical Parameters and Performance of 987 Type Electric Butterfly Valve
Electric Actuator Parameters		Valve Body Parameters
Power Supply	AC 110V / 220V / 380V DC 24V	Nominal Diameter	DN50 – DN300
Output Torque	50N / 100N / 200N	Nominal Pressure	PN 1.0 MPa
Optional Functions	Switch Type, Contact Type, Modulating, Intelligent Type	Valve Stem Material	UPVC / CPVC / PP / ABS
Stroke Range	0° to 90°, ±5°	Valve Body Material	UPVC / CPVC / PPH / PP / ABS
Action Time	15s / 30s / 60s	Valve Seat Seal	EPDM / NBR / FPM / PTFE
Ambient Temperature	-30 °C to +60 °C	Temperature	UPVC < 65 °C PVDF < 140 °C CPVC < 90 °C PP < 85 °C
Manual Operation	With handle operation	Applicable Media	Water and various corrosive fluids
Limitation	Electrical and mechanical dual limitation	Features	Lightweight, Corrosion Resistant, Hygienic and Non-toxic, Low Flow Resistance
Protection Level	IP67 (Explosion-proof enclosure: Ex d II BT4 IP67 optional)	Connection Method	Flange
Input Signal	0–10, 1–5 V DC / 4–20 mA (Intelligent Type)
Signal Feedback	Active Signal S Passive Signal