Gate Valve

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The gate valve allows for a single flow of direction in order to provide backflow into the pipeline system, and is comprised of the body, bonnet, disc, stem, shaft and other parts.

Working Principle
For this non-return valve, the disc is opened under fluid pressure effect, and the fluid then flows through the valve body from the inlet to the outlet. When the inlet pressure is lower than the outlet pressure, the valve disc will be closed automatically due to the two directions of differential pressure and its own gravity, thus preventing backflow.

Advantage
1. This sluice valve achieves a fast and reliable opening/closing process, and it is easy for people to check how wide the gate is when opened. It is widely used in fire sprinkler systems and industrial systems. In this regard, it can also be called a fire protection gate valve or industrial gate valve.
2. Our gate valve is rubber coated in order to offer excellent sealing effect, meaning leakage and rusting is unlikely to occur.
3. The valve body is manufactured from ductile iron, making it lightweight and easy to install. The valve seat has a flat base in order to avoid dirt deposition and provides a better sealing effect at the same time.
4. A non-toxic epoxy resin is coated on the internal surface of the valve body in order to achieve excellent resistance to rusting and corrosion, making our ductile iron gate valve suitable for both drinking water and waste water.
5. The gate valve has a low operation torque and a long service life. Its seal rings can be replaced without stopping work, making on-site maintenance simple.

Application
Our gate valves are commonly used for on/off and throttling services for pipe systems in tap water, sewage, construction, chemical petrochemical, pharmaceutical, food, electricity, marine, and metallurgy industries.

Specification of Gate Valve

DN	L	D	DO	D1	D2	b	f	N-d	H
40	140	150	130	110	88	19	3	4-19	-
50	150	165	130	125	102	19	3	4-19	202
65	170	185	130	145	122	19	3	4-19	222
80	180	200	150	160	138	19	3	8-19	250
100	190	220	185	180	158	19	3	8-19	303
125	200	250	185	210	188	19	3	8-19	351
150	210	285	195	240	212	19	3	8-23	411
200	230	340	225	295	268	20	3	8-23	498
250	250	395	245	350	320	22	3	12-23	579
300	270	445	285	400	378	24.5	4	12-23	679

DN	L	H	D	D1	D2	b	n-d	W
50	150	347	165	125	102	20	4-18	180
65	170	390	185	145	122	20	4-18	180
80	180	470	200	160	138	22	8-18	200
100	190	535	220	180	158	24	8-18	200
125	200	644	250	210	188	26	8-18	250
150	2210	739	285	240	212	26	8-22	280
200	230	936	340	295	268	26	8-22	300
250	250	1133	395	350	320	28	12-22	360
300	270	1330	445	400	370	28	12-22	400