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Ringing stem elastic seat seal gate valve

A valve is a mechanical device that controls the flow rate, flow direction, pressure, temperature, etc. of a flowing fluid medium. Valves are the basic components in piping systems. Valve fittings, like pumps in technology, are often discussed as a separate category.

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Classification:

Ductile iron valve series

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Description


A valve is a mechanical device that controls the flow rate, flow direction, pressure, temperature, etc. of a flowing fluid medium. Valves are the basic components in piping systems. Valve fittings, like pumps in technology, are often discussed as a separate category. The valve may be operated manually or with a hand wheel, handle or pedal, and may also be controlled to vary the pressure, temperature and flow rate of the fluid medium. The valve can perform continuous or repeated operations on these changes, such as safety valves installed in hot water systems or steam boilers. In more complex control systems, automatic control valves are used as required by external inputs (I. e., to adjust the changing set point of the flow through the pipeline). The automatic control valve does not need to be manually operated according to its input and setting, so that the valve can accurately control the various requirements of the fluid medium. Valves can also be divided into cast iron valves, cast steel valves, stainless steel valves, chromium molybdenum steel valves, chromium molybdenum vanadium steel valves, dual phase steel valves, plastic valves, non-standard customized valve materials, etc.

◆ Product use

Z41X stem elastic seat seal gate valve, pressure-bearing parts are high-strength cast iron; Gate plate is coated with glue; The surface is coated with harmless epoxy resin electrostatic spray, which can be used for drinking water pipelines. The valve body is designed without gate slot, which will not cause dirt deposition and is more suitable for sewage working conditions. It is widely used in tap water, sewage treatment, metallurgy, petroleum, construction chemical industry, electric power and other industries.

◆Technical parameters

Nominal pressure: 1.0 ~ 2.5MPa
Nominal diameter: 50~1200mm
Working temperature: 0~80 ℃
Applicable medium: water, gas, etc
Flange standard: GB/T17241.6, ASME B16.1, ASME B16.2
Test standard: GB/T 13927, API 598




◆ Main parts materials

Serial Number Part Name Material
1 Handwheel malleable cast iron
2 Stem Nut Copper alloy
3 Bracket ductile iron
4 Gland ductile iron
5 Sealing ring NBR, EPDM, EPDM
6 Stem Stainless Steel
7 Mouth pad Nitrile rubber, EPDM
8 Ram Ductile iron EPDM or nitrile rubber
9 Valve body ductile iron

 

◆ Main outline connection dimension

DN 50 65 80 100 125 150 200 250 300 350 400
L F4 150 170 180 190 200 210 230 250 270 290 310
BS 178 190 203 229 254 267 292 330 356 381 406
F5 250 270 280 300 325 350 400 450 500 550 600
(fully closed) Hmin   322 332 350 420 581 581 736 882 1009 1300 1380
(fully open) Hmax   374 398 429 524 721 736 942 1013 1117 1655 1805

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