Thrust bearing: NBR/EPDM
Dust proof gasket: NBR/EPDM
Hand wheel: DI
Signal gate valves and signal butterfly valves are used in automatic spraying water pipeline in fire protection system to monitor the water supply pipeline and indicate the valve’s opening at a long distance. Rising stem gate valves and opening indicator gate valves are often used in fire protection system, and if the installation position is high to the ground, rising stem gate valves is used and can show the valve’s opening clearly while if the installation position is low, opening indicator gate valves is used.
1.The seal is desigend with dustproof ring plus three “O”-seal ring,reliable sealing,on-line replaceable.
2.Both gate and aluminum bronze bearing are in inaid design good self lubrication ,high strength and can have the aluminum bronze bearing replaced withoutneed to replace the gate integrally,aftere a long time use.
3.Rubber wrapped gate anti-corrosion,good tightness.
4.Advanced surface treatment,coated with non-toxic epoxy resign static powder,anti-corrosion,pollution-free,can be used drinking water pipeline.
5.The body is designed without gate slot,the smooth passage will not get impurities filling up ,more applicable for sewage working condition.
6.The integral seal works raliably.For the high pressure seal,leaving zero leakage under1.5 times nominal pressure and ,for the low pressure one ,under 0.02Mpa.
|H (min)(full close)||313||332||372||424||497||562||680||837||948||1010||1220||1280||1480||1665|
|H (max)(full open)||355||375||415||476||540||600||720||875||990||1050||1245||1310||1560||1750|
1.Nominal pressure: 1.0-2.5MPa
3.Flanged end: GB/T17241.6 GB9113
4.Nominal diameter: 50-400mm
5.Service: water, oils, gas etc.
6.Inspection and test: GB 13927 API 598
1.Nominal voltage: 24V,DC/AC
2.Maximum working voltage: 220V
3.Rated current: 5A
4.Contact resistance: ≤1MΩ
5.Insulation resistance: ≥5MΩ（DC500V)
6.Working environment temperature :_10~85℃（no ice)
7.Work environment humidity: Below 85%RH
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