What is a flanged gate valve?

Gate valve and flanged slide gate valves manufacturer They open by lifting a round or rectangular gate/wedge out of the path of the fluid. The distinct feature is the sealing surfaces between the gate and seats are planar. The gate faces can form a wedge shape or they can be parallel.

How many turns on a 6 gate valve?

The AWWA operating formula for opening/closing a gate valve is 3 times the nominal valve size plus 2 or 3 turns of the operating nut. For example, a 6-inch gate valve would require 6 x 3 = 18 turns plus 2 or 3 turns, for a total of 20 to 21 turns.

What is wedge gate valve?

Wedge Type Gate Valves have a disc that is in the shape of a wedge that seats against two inclined seats. Solid wedges are used in high flow or turbulent applications such as steam service. Solid design also minimized the vibration and chatter.

When would you use a gate valve?

A gate valve is generally used to completely shut off fluid flow or, in the fully open position, provide full flow in a pipeline. Thus it is used either in the fully closed or fully open positions. A gate valve consists of a valve body, seat and disc, a spindle, gland, and a wheel for operating the valve.

Can a gate valve fail?

The most common causes of gate valve failure are wear and corrosion. Gate valves tend to wear out over time. And corrosion can cause the disc to stick in either the open or closed position. When the handle is forced, the stem leading from the handle to the disc will often break, rendering the valve useless.

What kind of gate valves are used in irrigation?

Watts: 6″ Gate Valve OS&Y #6-408OSY # 0702325. Series 408-OSY-RW OS&Y Flanged Gate Valves are used in irrigation and water distribution services. They feature an epoxy-coated, cast iron body with ANSI B16.1 flanged connections, resilient wedge disc, cast iron bonnet, bronze non-rising stem and cast iron handwheel.

How big is a 6 inch gate valve?

4. ZECO 6 inch gate valve is all its own precision casting molds, and the casting sand is fine sand, beautiful appearance and clear casting characters.

What kind of OS and Y gate valves are used?

Series OS&Y Flanged Gate Valves are used in irrigation and water distribution services. They feature an epoxy-coated, cast iron body with ANSI B16.1 flanged connections, resilient wedge disc, cast iron bonnet, bronze non-rising stem and cast iron handwheel. Maximum Pressure: 200psi (13.8 bar) CWP.

Which is better cast iron or flanged gate valves?

Bolt these valves to flanges. They gradually open and close to prevent system damage from suddenly starting and stopping flow. Epoxy-coated cast iron valves are more corrosion resistant than plain cast iron or steel valves. 316 stainless steel valves have the best corrosion resistance.