The first valve inside of a house after it comes in through the foundation. Is a gate valve the right one or which one?
either a gate or ball valve you could use a globe but it will restrict
flow some what i prefer ball as they are quicker to shut off in a
emergency.
Years ago it would have been a gate valve. Now, ball valves are used
since they last longer without leaking and do not get clogged up and
made unable to close properly.
Use a Ball Valve designed for water. They usually have a blue handle. Gate valves tend to leak and get stuck.
From the original1gatevalve
.
2011年3月30日星期三
Features of hydraulic gate valve
The hydraulic gate valves are widely used in the automatic
control systems and remote control systems, featuring the hydraulically
controlled opening and closing, stable performance and easy operation.
Typical gate valves should never be used for regulating flow, unless
they are specifically designed for that purpose. On opening the gate
valve, the flow path is enlarged in a highly nonlinear manner with
respect to percent of opening. This means that flow rate does not change
evenly with stem travel.
Features of hydraulic gate valve can be summarized as:
1) Hydraulic actuator installed on the top of the bonnet with controls the open and close of the valve by hydraulic pressure;
2) Metal seal between the body and bonnet;
3) Backseat seal between the stem and the bonnet, easy for the change of sealing stuff under pressure;
4) Sealing surface is hard-faced or the QBQ with the performance of anti-corrosion, wear-resistance;
5) Low operating torque.
From the original1gatevalve
.
control systems and remote control systems, featuring the hydraulically
controlled opening and closing, stable performance and easy operation.
Typical gate valves should never be used for regulating flow, unless
they are specifically designed for that purpose. On opening the gate
valve, the flow path is enlarged in a highly nonlinear manner with
respect to percent of opening. This means that flow rate does not change
evenly with stem travel.
Features of hydraulic gate valve can be summarized as:
1) Hydraulic actuator installed on the top of the bonnet with controls the open and close of the valve by hydraulic pressure;
2) Metal seal between the body and bonnet;
3) Backseat seal between the stem and the bonnet, easy for the change of sealing stuff under pressure;
4) Sealing surface is hard-faced or the QBQ with the performance of anti-corrosion, wear-resistance;
5) Low operating torque.
From the original1gatevalve
.
2011年3月29日星期二
Resilient seated gate valve briefly the main purpose
Main purposes:
1. Thrust bearings to reduce friction to reduce operating torque
2. Three Ο-ring can significantly reduce water leakage, and in the case of the pressure and constant water replacement “O” ring
3. Double tooth type stem, can reduce generation of operating torque
4.
Inside and outside with rubber laminating pressure designed to avoid
loss due to prolonged use without the valve at the bottom of the groove,
not easy to siltation caused by debris
5. Valve in vivo using non-toxic powder epoxy resin coating to enhance corrosion resistance capabilities, improve water quality
6. Embedded copper nut, not easy to loose and damaged
7. European rubber vulcanization technology to ensure the skills of rubber elasticity
User requirements can be twisted roots of various electric actuator equipped to realize remote control and automatic control. Sensitive, reliable, easy installation and so on. Can
be widely used in tap water, sewage, construction, petroleum, chemical,
food, medicine, textile, electric power ships, metallurgy, energy
systems, fluid lines and the closure as a conditioning device. RVEX electric resilient seated gate valve, electric resilient seated gate valve, resilient seated gate valves.
From the original1gatevalve
.
1. Thrust bearings to reduce friction to reduce operating torque
2. Three Ο-ring can significantly reduce water leakage, and in the case of the pressure and constant water replacement “O” ring
3. Double tooth type stem, can reduce generation of operating torque
4.
Inside and outside with rubber laminating pressure designed to avoid
loss due to prolonged use without the valve at the bottom of the groove,
not easy to siltation caused by debris
5. Valve in vivo using non-toxic powder epoxy resin coating to enhance corrosion resistance capabilities, improve water quality
6. Embedded copper nut, not easy to loose and damaged
7. European rubber vulcanization technology to ensure the skills of rubber elasticity
User requirements can be twisted roots of various electric actuator equipped to realize remote control and automatic control. Sensitive, reliable, easy installation and so on. Can
be widely used in tap water, sewage, construction, petroleum, chemical,
food, medicine, textile, electric power ships, metallurgy, energy
systems, fluid lines and the closure as a conditioning device. RVEX electric resilient seated gate valve, electric resilient seated gate valve, resilient seated gate valves.
From the original1gatevalve
.
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