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CN | EN

Fire-fighting groove rising stem gate valve

Technical Parameters

Product model: Z81X/RVGX

Nominal diameter: DN50~300mm

Nominal pressure: PN1.0/1.6MPa

Seal test: 1.5/2.4MPa

Applicable temperature: 0℃～80℃

Applicable medium: water, gas, etc.

Main material: cast iron, cast steel



Product Details

Product description

The gate of the fire-fighting grooved open-stem gate valve moves linearly with the valve stem. Usually there is a trapezoidal thread on the lifting rod. Through the nut on the top of the valve and the guide groove on the broad body, the rotation The operating torque becomes the operating thrust. By turning the hand wheel, the valve plate linked with the valve stem is raised or lowered through the advance and retreat of the thread of the hand wheel and the valve stem to achieve the purpose of opening and closing. The opening and closing part of the open-stem gate valve is a gate, and the moving direction of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, and cannot be adjusted or throttled.


Main external connection size

Nominal diameter 50 65 80 100 125 150 200 250 300
D 57 60 76 89 108 114 133 159 219 273 325
140 165
A1 14.5 14.5 14.5 16 16 16 19 19 19
BA 9.5 9.5 9.5 9.5 9.5 9.5 13 13 13
C 2.2 2.2 2.2 2.2 2.2 2.2 2.5 2.5 3.3

L 		145 160 170 180 200 240 275 325 355

H 		325 455 455 455
500 620 750 880
D0 180 200 200 200
240 320 320 400

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