Grooved End Wafer Signal Butterfly Valve

Product Description

Grooved End Wafer Signal Butterfly Valve

Introduction
A butterfly valve is a valve which can be used for isolating or regulating flow. The closing mechanism takes the form of a disk. Operation is similar to that of a ball valve, which allows for quick shut off. Butterfly valves are generally favored because they are lower in cost to other valve designs as well as being lighter in weight, meaning less support is required. The disc is positioned in the center of the pipe, passing through the disc is a rod connected to an actuator on the outside of the valve. Rotating the actuator turns the disc either parallel or perpendicular to the flow. Unlike a ball valve, the disc is always present within the flow, therefore a pressure drop is always induced in the flow, regardless of valve position.

Specification

Materials of major parts

No.	Part	Material
1	Body	Ductile Iron
2	Disc	DI/SS/Bronze
3	Stem	SS304/316
4	O-ring	EPDM/NBR/VITON
5	Seat	EPDM/PTFE
6	Bushing	PTFE/Bronzel
7	Hand Wheel	Cast Iron
8	Worm Gear	Cast Iron

Dimensioons(mm)

DN	L	L1	Φ	H1	H2	H3	N	Φ3
40	42	250	110	66.5	142	26	4	18
50	42.3	260	125	66.5	142	26	4	18
65	43.3	280	145	74.1	151	26	4	18
80	45.6	284	160	94	161	26	4	18
100	50.6	357	180	110.8	181	26	4	18
125	53.6	374	210	128.8	191	28	4	18
150	54.4	374	240	140.5	204	28	4	22
200	59.6	384	295	172.5	238	29	4	22
250	65.4	384	350	206.2	268	29	4	22/26
300	75	537	400	235.8	306	30	4	22/26

Photoes


Other Fire Fighting Equipment