Home >> YUANDA Valve
The gate valve controls the flow of water by raising or lowering the inner gate using a twist handle or knob located on the top of the valve. Gate valves must never be used to control flow-they are designed to be fully open (allowing complete flow) or fully closed (completely stopping flow).
When the operator rotates the handle counterclockwise, the valve stem lifts from the handle and opens the door. Rotate the gate clockwise to move the valve stem back to the gate and close the valve. When the valve stem no longer extends out of the handle, the gate valve is closed.
The most common causes of gate valve failure are wear and corrosion. Over time, gate valves tend to wear out. Corrosion can cause the disc to get stuck in the open or closed position. When the handle is stressed, the valve stem leading from the handle to the disc often breaks, making the valve unusable.
The correct way to open the gate valve is to gently turn the handle counterclockwise (to the left) without excessive force-don't "jump" the handle. A typical 1-inch water main control valve requires about six turns to fully open. Stop turning as soon as there is any resistance.
When the handle of the ball valve is parallel to the valve or pipe, it is open. When it is vertical, it is closed.
When the valve is fully open, the gate valve is full bore, which means that nothing obstructs the flow, because the gate and the pipe have the same diameter. This aperture also determines the size of the valve.
The main difference is the operation. The gate valve moves the solid disc up and down to open/close the orifice. The ball valve rotates a ball with a hole (orifice) 90 degrees to open/close the valve.
Contact US
Related Information
gate valve factoryKeystone Butterfly Valveball valve working principleBall Valve Vs. Butterfly Valvehow to identify gate and globe valve3 way globe valvebest gate valveshow does a gate valve workhow to read a globe valve3 Inch Check Valve8 Cast Iron Backwater Valvehow to replace a gate valve with a ball valveKnife gate valve manufacturer Chinaball valves for saleWhere are valves usedBrass valvesCast Iron Dual Plate Check Valvehow a gate valve worksChina Check Valve Supplierball valve corrosion6 inch butterfly valveglobe valve flow controlwhat is a butterfly valveWhere butterfly valve is usedwhat is a globe valve8 Inch Check ValveCheck Valve Cast Ironwhat is a brass ball valveWhere would a single check valve be usedplastic ball valve threadedglobe valve partsCast Iron Lift Check Valve3/4 ball valve for air compressorgate valve manufacturersCheck Valve PriceNon Return Valve Suppliers Chinatypes of ball valves in plumbing3/4 ball valve stainless steel5 inch pvc ball valveGate ValveCast Steel Valveshow does bellows seal globe valve workhow does a 3 way mixing globe valve workwhere to place globe valve on an irrigation systemCast Flow Check Valve