Gate Valves (Sürgülü Vanalar)

Resilient seat gate valve has many advantages against old fashioned metal seated gate valve. Lack of valve pocket for gate seat maintains smooth and unobstructed waterway and eliminates depositing of impurities which may cause ineffective shut-off and leaking from metal to metal contact in time. Resilient seat contact is easily and perfectly maintained and this allows quick and perfect change of gate without dismantling the valve from pipeline when the rubber lining is worn out. In turn, when the metal-seated gate valve leaks, it should be returned to its factory for renewing and precise machining of metal seats, or it should be thrown away.

 
Available Types

Advantages of Resilient Seat Gate Valves
  • Different face to face dimensions available for double flanged valve in accordance     with different standards such as BS 5163, DIN 3352 4A and 4B, etc.
  • Different types of valve body design maintain so many applications for steel, cast    iron, ductile iron, PVC piping and even connecting/converting different types of      pipes.
  • The gate completely with EPDM rubber by vulcanizing
  • The gate completely with EPDM rubber by vulcanizing
  • No seat for the body and gate inserted;
  • The waterway in the area shall be smooth, unobstructed and free of cavities
  • Very low pressure losses, no debris trap due to smooth water passage
  • All internal parts, especially the gate can be replaced without dismantling the valve body from pipeline.
  • Stem O-ring seals can easily be replaced while the valve is open under service
  • Valve can be installed in any position
Applications ( Available for both resilient and metal seat gate valves)
  • Drinking water
  • Sewage
  • Air conditioning
  • Heating systems (up to 70°C)
  • Food industry
  • Fire fighting
  • Natural and inert gas
  • Irrigation
  • Waste water
Coating
Inside and outside of resilient seat gate valves are coated by elctrostatic or fusion     bounded epoxy powder, standard paint blue in color (RAL 5010). Suitable for drinking    water. Other types of paint and any color are available upon request. Inside, enamel    coated valves available upon request. Inside and outside of metal seat gate valves are  coated by coal tar epoxy as standard. Other epoxy colors are on request.
 
Testing of SMS Gate Valves
Both resilient and metal seat SMS gate valves have been cycletested thousands of times      in excess of the required standard and has still maintained a buble tight seal and easy closing/opening action. Applied standard tests are hydraulic tests for body and seat. Operating torque test is on request.
 
Standard Hydraulic Test Pressure
Hydraulic test to DIN 3230 Part 4
  • Working pressure : 10 - 16 - 25 bars
  • Body test pressure : 1.5 times nominal pressure applied by closing both ends
  • Seat test presuure : 1.1 times nominal pressure applied from both sides
Accessories
  • Position indicator
  • Console flange for electric actuator
  • CCW closing
  • Rising / nonrising stem
  • Actuators (electric, pneumatic, hydraulic)
  • Electric limit switch
  • Extension spindle
  • Surface box
  • Headstock
  • Chainwheel and chain with overhead valve