1.gate valve design DIN 3352 F5
3.Rubber encapsulated wedge
4.Clockwise closing direction
Low torque operation
Rubber encapsulated wedge
Clockwise closing direction
Fusion bonded epoxy coated inside and outside
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.
7.BUNDOR Product quality is covered by China Pacific Insurance with two million dollors. Bundor Valve, Two Years Warranty, Pay Two Back If One Bad. Any quality problems of the product itself, we will pay without conditions.
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
Test of sealing performance between valve opening and closing parts and seat seal, between valve body and valve seat.
The display pressure of the valve lumen during the experiment
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
Seals made of non-metallic elastic materials, solid and semisolid lubricants, etc.