API Flanged Stainless Steel Gate Valve

Description
Designed with high-tech wedge sealing systems and bolted or pressure-seal bonnets, Kayson’s API flanged stainless steel gate valves permit high fluid flow with negligible friction loss. To maximize performance and lifespan, remember that wedge gate valves are not designed for modulating fluid flow. Constant flow changes take a toll on your flanged gate valves, causing early seat wear and eventual valve leaks.

Application
API flanged stainless steel gate valves are widely applied in the fields of tap water, construction, petroleum, chemical, food, medicine, electric power, shipbuilding, metallurgy, etc.

Features
1. Small flowing resistance.
2. Easy to open and close, and convenient to install.
3. Very low frequency of water hammer phenomenon.
4. Low opening torque.
5. High corrosion resistance.
6. API 6D / CE certified.

Maintenance
1. Hand wheel, handle, and transmission structure of API flanged stainless steel gate valves cannot be lifted up and down.
2. Dual flanged gate valves should be installed vertically, that’s to say, the stem is in vertical direction and handle wheel is at the top.
3. If by-pass valve is combined with wedge gate valves, the by-pass valve should be open first to balance the entrance and exit’s pressure.
4. If those API flanged stainless steel gate valves are used frequently, please lubricate them at least once per month. And they should be maintained regularly.

Attention
1. Before installing this flanged gate valve, please check valve body, sealing surface and other parts to avoid any dirt attachment.
2. Bolts at any connection joint should be fastened.
3. Inspect the packing part to ensure excellent sealing performance and flexible opening.
4. When installing, some space should be left for wedge gate valves to actuate.
5. The connection of actuating devices should be strictly complied with circuit diagram. 6. Avoid collision or extrusion.

Payment, Package and Transportation
We accept such payments as T/T, D/P, D/A, or L/C. Our API flanged stainless steel gate valves will be packed in standard wooden boxes and delivered by railway, sea, or airplane.

Specification of API 6D Flanged Gate Valves

Design and Manufacture	Face to Face / End to End	Flange Dimension	Butt Welding Dimension	Pressure Temperature Test	Inspection and Test
API 600	ANSI B16.10	ANSI B16.5	ANSI B16.25	ANSI B16.34	API 598
API 6D	API 6D	ANSI B16.5	ANSI B16.25	ANSI B16.34	API 6D

Pressure Testing of API Flanged Stainless Steel Gate Valves

PN(Lb) Nominal Pressure	Shell Test		Water Seal Test		Air Seal Test
	MPa	Lbf/in	MPa	Lbf/in	MPa	Lbf/in
150	3.0	430	2.2	315	0.4-0.7	60-100
300	7.7	1110	5.7	815
600	15.3	2220	11.3	630
900	23.0	3330	17	2445