Click image to view full size image
Gate Valve AssemblingProcedure:
1.Gatevalve body 2.Rubberencapsulation wedge
3.Assemblingwedge and stem 4.Assembling bonnet
5.Installbolts, make the body and bonnet joint 6.Assembling stuffing cap
7.Pressuretest 8.Gate valve assembling finished
Gatevalve Packing Procedure:
1.gatevalve packed with bubble bag,lay in plywood case 2.packingfinished
ProductIntroduction
Thisvalve is ideal for shutting off and controlling the flow ofpipeline, is wide installed in any selected position and used invarious kind of the industries of petroleum processing, chemicals,water supply and sewage, medicine, metallurgy, electric power,building, energy engineering and so on.
Feature:
1.Ductile Iron body and bonnet for high strength and impactresistance.
2.Valve body and bonnet fusion bonded epoxy coating for long lifecorrosion protection.
3.Straight through full bore to avoid debris traps, small flowresistance.
4.Ductile Iron wedge inside and outside fully rubberized withvulcanized EPDM or NBR, suitable for potable water.
5.Rubber bonnet gasket for longevity and protection of bonner bolts,Isolated fasteners for corrosion protection.
6.Stainless steel stem with rolling thread for high strength andcorrosion resistance.
7. Backsealing facility to allow for replacement of seals under fullpoeration pressure.
8. Dustguard to prevent impurities.
9.Valve is supplied with hand wheel or bare shaft with square cap;Small operation torque, easy opening and closing.
Note inMaintenance,Installation and Using asfollow:
1.Testing pressure in a working site:
1. Ifmud and sand enter in valve, you must scour inside of body by cleanwater;
2. Thewater for testing pressure must contain polyphosphate sodium,protecting inner body from corrosion;
3. Whentesting sealing pressure, pls don''t press to end flange, otherwisemaking sealing surface to distortion and leakage. If it is soserious, disc will be not open and the valve is useless;
4.Finish testing, drain water of inner body, put plug on end of valveto ensure clean of inner body;
5. Ifvalve is putted in stock more than six months, it must be testedsealing pressure.
2.Installation in location site:
1. Whenweight of valve excess 50Kg, you must pay attention to safety,using a sling to installation to prevent driven device damage fromfalling down. Advice: Valve is installed in stem direction ofvertical ground;
2. Whenvalve is connected with pipe, flange of valve must be putted up bysupport, otherwise valve will be leakage, serious distortion willresult in not moving of driven device;
Whenthe valves with pneumatic, hydraulic, electric actuator will beleft factory, technician has completely regulated in condition oftesting sealing pressure for the valves, the valves complied withthe requirement. Due to medium of high temperature disc is notlighted, pls professional technical regulating.
| Specifications | |
| Size | DN40-DN1200 |
| Endflange | DIN/BS/ANSI/JIS |
| Face toface | DIN/BS/ANSI/AWWA |
| Main Parts and Materials | |
| Body | Castiron/Ductile iron |
| Wedge | Castiron/Ductile iron with EPDM/NBR |
| Stem | Brass/StainlessSteel |
| Bonnet | Castiron/Ductile iron |
| Bolt& Nut | StainlessSteel/Steel with zinc |
| Applications | ||
| Temperature | ≤120°C | |
| Medium | water,wastewater, seawater, air, steam, foodstuff, medicine, oils, acids,etc. | |
| Test | ||
| WorkingPressure | PN10 | PN16 |
| ShellPressure | 1.5MPa | 2.4MPa |
| SeatPressure | 1.1MPa | 1.76MPa |
Flange Standard: DIN 2533 PN16
gear box operated cast iron large gate valves
