Product Description
Pneumatic butterfly valves are widely used for fluid automatic control or regulation control in industries such as natural gas, oil, chemical, metallurgical, papermaking, power management, mining, printing and dyeing, biopharmaceuticals, daily chemical, food and beverage, water treatment, and air treatment. They are used in conjunction with automated pneumatic instruments.
The structural characteristics of pneumatic butterfly valves are:
·Centerline elastic seal: The sealing material is divided into rubber and fluoroplastic or fully lined rubber and fluoroplastic. The elastic valve seat is equipped with high-precision butterfly plates to ensure zero leakage. The bottom, middle, and upper parts of the valve stem are equipped with bushings for support and rotational sliding, maintaining a small friction force. The product is lightweight, small in size, and can be opened and closed quickly.
·Triple eccentric structure seal: Valve seat sealing materials are divided into metal seals and fluoroplastic seals. Metal sealed butterfly valves have elastic sealing ring seats and multi-layer composite butterfly plates. The three-dimensional eccentric sealing structure has small opening and closing friction, reliable sealing performance, wear resistance, high temperature resistance, self centering effect, minimal leakage, and long service life. The product has a reasonable structure, light weight, small volume, small installation size, easy operation, and quick opening and closing.

·Product Performance Specification

Pressure level		Nominal pressure PN (Mpa)							Pound class
		0.6	1.0	1.6	2.5	4.0	6.4	10.0	150	300		400	600
test Pressure (Mpa)	Shell Test	0.9	1.5	2.4	3.75	6.0	9.6	15.0	3.03	7.5		10.2	15.0
	Sealing test	0.66	1.1	1.76	2.75	4.4	7.04	11.0	2.2	5.5		7.48	11.0
	hermetic seal	0.6 (Mpa)
Applicable Medium		Valve body material
		C					P				R
		Water, steam, oil products, liquefied gas, etc					Nitric acid corrosive media, etc				Acetic acid corrosive media, etc

Temperature rating of valve seat sealing material

Code name	Material Science	Applicable temperature (℃)
H	Alloy steel 304, 316	-30 ～ 425
F	Reinforced polytetrafluoroethylene	-40 ～ 180
X	nbr	-12 ～ 82
	EPDM	-35 ～ 110
	Food grade ethylene propylene rubber	-35 ～ 110
	VITON	-12 ～ 135
J	Fully lined nitrile rubber	-12 ～ 82
F4	Fully lined polytetrafluoroethylene	-40 ～ 160

Options for attachments

According to different controls and requirements, the following attachments can be selected:
Cut off accessories: single electric control solenoid valve, dual electric control solenoid valve, limit switch feedback device.
Adjustable accessories: electrical locator, pneumatic locator, electrical converter.
Air source processing accessories: air filter pressure reducing valve, air source processing triad.
Manual mechanism: HVSD manual control mechanism