DIN 3352 F5 Resilient Seated Flanged Gate Valve

Specifications
1.gate valve design DIN 3352 F5
2.Rising/Non-rising stem
3.Rubber encapsulated wedge
4.Clockwise closing direction

Product Features
Low torque operation
Rubber encapsulated wedge
Clockwise closing direction
Fusion bonded epoxy coated inside and outside

Product Advantage
1.The body is ductile iron,high level than national stanard.Tensile strength is 450Mpa，elongation is large than 10%，can not be broken easily when transport.
2. Both inner and out part is epoxy coating, the thickness is 250μm minimum,can prevent rust well,can be used in  sewage system. 
3.The wedge is coated with EPDM, the EPDM proportion can reach 50%，steable and good resilient.
4. 3 O rings are used on 2Cr13 stem,can reduce friction，prevent leakage,can change sealing ring with stop water.
5.The stem use brass, operate easily,prevent block.
6.Every link, from workblank to the finished product packaging will be inspected strickly.

Standard Test
Shell test
The cold test of the valve body, which is connected with the valve body and the valve cover, is carried out to test the structural strength, pressure resistance and compactness of the valve housing, including the whole housing in the fixed connection
Closure test
Test of sealing performance between valve opening and closing parts and seat seal, between valve body and valve seat.
Test pressure
The display pressure of the valve lumen during the experiment
Test fluid
Liquid or gas for pressure test of valves
Test fluid temperature
The temperature of the liquid or gas used for the pressure test of the valve shall be in the range of 5-40 unless otherwise specified
Resilient seats
Seals made of non-metallic elastic materials, solid and semisolid lubricants, etc.