Werbung

Gratis bloggen bei
myblog.de

Angle valve manufacturer and factory in China

The first screw-down faucet mechanism was patented and manufactured by the Rotherham brass founders, Guest and Chrimes,in 1845. Most older faucets use a soft rubber or neoprene washer which is screwed down onto a valve seat in order to stop the flow. This is called a "globe valve" in engineering and, while it gives a leak-proof seal and good fine adjustment of flow, both the rubber washer and the valve seat are subject to wear (and for the seat, corrosion) over time, leading to leakage (see photo). The washer can be replaced and the valve seat resurfaced (at least a few times), but globe valves are never maintenance-free.

Angle valve

Angle valve

Angle valve

Angle valve

Also, the tortuous S-shaped path the water is forced to follow offers a significant obstruction to the flow. For high pressure domestic water systems this does not matter, but for low pressure systems where flowrate is important, such as a shower fed by a storage tank, a "stop faucet" or, in engineering terms, a "gate valve" is preferred.

Gate valves use a metal disc the same diameter as the pipe which is screwed into place perpendicularly to the flow, cutting it off. There is no resistance to flow when the faucet is fully open, but this type of faucet rarely gives a perfect seal when closed. In the UK this type of faucet normally has a wheel-shaped handle rather than a crutch or capstan handle.

Cone valves or ball valves are another alternative. These are commonly-found as the service shut-off valves in more-expensive water systems (Kitchen faucet ,Bathroom faucet) and usually found in gas faucets (and, incidentally, the cask beer faucets referred to above). They can be identified by their range of motion—only 90°—between fully on and fully off. 

Hands free infrared proximity sensors are replacing the standard valve. Thermostatically controlled electronic dual-purpose mixing or diverting valves are used within industrial applications to automatically provide liquids as required.

 We are professional Angle valve manufacturer and factory in China. We can produce Angle valve  according to your requirements. More types of Angle valve wanted, please contact us right now!

Contact us
Tel: 0086-576-82739999
0086-576- 82218999
Fax: 0086-576-82731899

Website:www.chinese-faucet.com

19.9.08 09:08

Werbung


bisher 0 Kommentar(e)     TrackBack-URL

Name:
Email:
Website:
E-Mail bei weiteren Kommentaren
Informationen speichern (Cookie)


 Smileys einfügen