Pneumatic Wafer Butterfly Valve

Description

The Pneumatic Wafer Butterfly Valve is powered by compressed air and equipped with a high-precision pneumatic actuator. It ensures reliable open/close or modulating control through a 90° rotational movement of the valve disc. Designed for industrial pipelines, it is available in two configurations:

• Soft Seal: Ideal for low-temperature, normal-pressure applications requiring tight sealing.
• Hard Seal: Suitable for high-temperature, high-pressure environments with abrasive or impure media.

Paired with a limit switch, solenoid valve, and air treatment unit, this valve supports automation through a 4-20mA input signal. Widely used in petroleum, chemical, light industry, and automotive sectors, it ensures efficient flow control in both remote and on-site setups.

Technical Specifications

1. Actuator Type:
   • Single Acting:
     • Air-to-Close (Valve opens upon air failure).
     • Air-to-Open (Valve closes upon air failure).
   • Double Acting:
     • Air-to-Close or Air-to-Open (Valve position remains fixed upon air failure).
2. Nominal Diameter: DN50~1000mm
3. Nominal Pressure: PN1.0, 1.6, 2.5, 4.0MPa
4. Connection Type: Wafer
5. Supply Air Pressure: 0.3-0.8MPa
6. Transmission Mode: Pneumatic (manual override available).
7. Applicable Media: Freshwater, wastewater, seawater, air, steam, food, oils, acids, alkalis, etc.
8. Temperature Range:
   • Soft Seal: ≤150°C (fluids like water and gases).
   • Hard Seal: ≤425°C (fluids like water and steam).

Features

1. Compact and lightweight design for easy installation and maintenance.
2. Reliable bi-directional sealing for diverse media types.
3. Durable soft and hard sealing materials for extended service life.
4. Flexible configuration with intelligent control options for 4-20mA input.
5. Wide range of applications across petroleum, chemical, water treatment, and automotive industries.

Applications

The Pneumatic Wafer Butterfly Valve excels in applications requiring reliable sealing and efficient flow control:

• Oil & Gas: Transporting and regulating gas and liquid pipelines.
• Chemical Industry: Corrosive and high-temperature media.
• Food Processing: Hygienic liquid control.
• Water Treatment: Freshwater, wastewater, and desalination pipelines.
• General Industrial Use: Light industry, automotive, and HVAC systems.

Main connection dimensions

DN	Dimensions					Connection size			Actuator Model*
	L	L1	L2	H	H1	D	D1	n-φd
50	43	164/214	75/91	263/291	80	165	125	4-φ18	VTD65/VTE80
65	46	164/214	75/91	277/305	89	185	145	4-φ18	VTD65/VTE80
80	46	164/214	75/91	283/311	95	200	160	8-φ18	VTD65/VTE80
100	52	190/246	91/101	330/340	114	220	180	8-φ18	VTD80/VTE90
125	56	210/295	101/112	353/369	127	250	210	8-φ18	VTD90/VTE100
150	56	247/398	112/139	382/408	139	285	240	8-φ22	VTD100/VTE125
200	60	308/478	139/176	442/493	175	340	295	8-φ22	VTD125/VTE160
250	68	378/562	176/206	525/574	203	395	350	12-φ22	VTD160/VTE190
300	78	432/728	206/228	619/642	242	445	400	12-φ22	VTD190/VTE210
350	78	524/928	228/275	673/720	267	505	460	16-φ22	VTD210/VTE255
400	102	524/1033	228/324	705/800	309	565	515	16-φ22	VTD210/VTE300
450	114	648/1129	275/380	774/880	328	615	565	20-φ26	VTD255/VTE350
500	127	715/1430	324/425	880/905	361	670	620	20-φ26	VTD300/AW20S
600	154	795/1845	380/527	1020/1089	459	780	725	20-φ30	VTD350/AW28S
700	165	795/1845	280/527	1082/1151	520	895	840	24-φ30	VTD350/AW28S
800	190	1380/2605	527/440	1199/1112	591	1015	950	24-φ33	AW28/AW35S

This valve is the ultimate solution for automation and industrial process efficiency.