1. the seal is designed with dustproof ring plus three " O" -seal ring, reliable sealing, on-line replaceable.
2. both gate and aluminum bronze bearing are in in aid design good self lubrication, high strength and can have the aluminum bronze bearing replaced without need to replace the gate integrally, after a long time use.
3. Rubber wrapped gate anti-corrosion, good tightness.
4. Advanced surface treatment, coated with non-toxic epoxy resign static powder, anti-corrosion, pollution-free, can be used drinking water pipeline.
5. the body is designed without gate slot, the smooth passage will not get impurities filling up, more applicable for sewage working condition.
6. the integral seal works raliably. for the high pressure seal, leaving zero leakage under1.5 times nominal pressure and,for the low pressure one,under 0.02Mpa.
Materials of major parts:

No.	part	Material
1	Body	Ductile cast iron
2	Disc	Ductile cast iron packed with NBR
3	Bolt	CS  SS
4	Gasket	EPDM  NBR
5	Cover	Ductile cast iron
6	Stem	Stainless steel
7	O-ring	EPDM  Silicone
8	Thrust bearing	Brass
9	Bolt	CS  SS
10	Gland	Ductile cast iron
11	Dust proof gasket	EPDM/NBR
12	Hand wheel	Ductile cast iron

Produt photo:

how to reach our factory:
by plane:
from Beijing airport:240kms,3 hours by driving.
from Tianjin airport:150kms, 2 hours by driving.
by Train:
from beijing South railway station:224Kms, 1 hours
from Shanghai Hongqiao railway station:1167Kms, 4.5 hours
by Car:
from CangzhouXi railway station:45kms, 40 minutes.

Our address: Botou Industry Park,Cangzhou City,Hebei Province,China

Botou Shengfeng auto-valve Co,. LTD is a specialized manufacture enterprise that focuses producing, installing, sale and service. the main products include Gate Valve,Waterpower Control Valve,Center Line Butterfly Valve, Flanged Butterfly Valve, Metal Butterfly Valve, Check Valve, Microresistance Slow Close Check Valve, Multi-function Pump Control Valve and their series products. Moreover, we can produce control valve and pressure reducing valve that are different materials, pressures, specifications, actuation ways. Our products include more than 50 serials and 1200 species, and the annual production output is more than 8.000 metric tons. Shengfeng valves have been selling well all over China and exporting to Europe, America and other countries and areas, which are used widely in water supply and drainage, electric power, petrol chemical industry, metallurgy and other trades. Our products are quite creative, good quality, cheap price and excellent.