Bright Stem Elastic Seat Sealing Gate Valve

A pipeline control valve driven by a lifting rod, which converts rotational motion into linear thrust through trapezoidal threads and valve body guide grooves, achieving rapid lifting and full open/full close control of the gate. The gate plate is entirely covered with rubber to form an elastic sealing structure, which can adaptively compensate for the deformation of the sealing surface under medium pressure, avoiding leakage and corrosion. The bottom flat bottom valve seat design reduces the accumulation of impurities. Suitable for clean water, non corrosive liquid pipelines in fire protection, water supply and drainage, and petrochemical industries, with a working temperature of ≤ 200 ℃ and a nominal pressure of ≤ PN2.5MPa.

  • Multi scenario adaptability
  • Compact and lightweight design
  • Convenient operation and maintenance
  • Low drag fluid dynamics
  • Elastic sealing structure
  • High strength and corrosion-resistant material
Multi scenario adaptability
  • Multi scenario adaptability
    01
    Compliant with standards such as GB/T12237, with a nominal pressure coverage of PN 1.6-2.5MPa and a diameter range of DN50-600mm, it can meet the pressure and temperature resistance (≤ 200 ℃) requirements of petroleum, chemical, fire protection, municipal pipeline networks and other scenarios.
Compact and lightweight design
  • Compact and lightweight design
    01
    Compared to traditional gate valves, the weight is reduced by 20%, and the clamp type valve body connection reduces leakage points. The gear drive system only requires 90 ° rotation to complete opening and closing, reducing operating torque by 30% -50%.
Convenient operation and maintenance
  • Convenient operation and maintenance
    01
    The open stem structure supports remote control through external electric/pneumatic drive devices, and the valve stem is equipped with three O-ring seals (three "0" seals), making the switch lightweight and leak proof; The modular design of the gate supports online disassembly and replacement, without the need to disassemble the valve as a whole.
Low drag fluid dynamics
  • Low drag fluid dynamics
    01
    In the fully open state, the flow channel is straight through without any reduction in diameter, the flow direction of the medium is not restricted, and the pressure loss is small. The valve seat is designed to be flush with the pipeline to reduce turbulence and minimize the risk of erosion on the sealing surface.
Elastic sealing structure
  • Elastic sealing structure
    01
    The gate is entirely covered with rubber and adopts a wedge-shaped design. The sealing surface adhesion is adaptively adjusted by the medium pressure, and combined with the flat bottom valve seat, impurities are avoided from accumulating, achieving zero leakage sealing.
High strength and corrosion-resistant material
  • High strength and corrosion-resistant material
    01
    The valve body is made of ductile iron QT450 material, which combines hardness and cost-effectiveness. The surface is treated with electrostatic powder spraying technology, and the flow channel is smooth and corrosion-resistant; The inner cavity is coated with non-toxic epoxy resin, suitable for drinking water and sewage systems.
Main Component Materials

Part Name

Material

handwheel

Ductile iron, ductile iron, cast steel, stainless steel

stem nut

copper alloy

support

Grey cast iron, ductile iron, cast steel

cover pressing

Ductile iron, cast steel

sealing ring

Nitrile rubber, EPDM

valve stem

Stainless steel (45 #, 1Cr13, 304, 416, 316)

Mid mouth pad

Nitrile rubber, EPDM

ram

Ductile iron+EPDM or nitrile rubber

valve body

Grey cast iron, ductile iron, cast steel

Transmission modes: manual, electric, pneumatic, hydraulic.

Performance Specifications & Dimensions
  • Nominal Pressure PN
    1.0/1.6/2.5
  • Shell F
    Px1.5
  • Sealing Pressure
    Px1.1
  • Medium
    Water, Steam, Oil
  • Temperature (℃)
    0~80℃

Nominal diameter

DN (mm)

L

Hmi

 (fully closed)

Hmax

(fully open)

50

178

322

374

65

190

332

398

80

203

350

429

100

229

420

524

125

254

581

721

150

267

581

736

200

292

736

942

250

330

882

1013

300

356

1009

1117

350

381

1300

1655

400

406

1380

1805

Note: The pressure range is 1.0MPa~2.5MPa. The above data is for reference only. Please consult the company's sales department for details.

Valve Application
  • Oil & Gas Transportation

    Oil and gas transportation involves multiple modes such as pipelines and ships, and is the core link of the energy supply chain.

  • Chemical Raw Material Control

    The control of chemical raw materials covers the entire process of mining, storage, and production, ensuring safety and process stability.

  • High Temperature SteamPipeline in Power System

    High temperature steam pipelines are the core of energy transmission in power systems, supporting the efficient operation of thermal and nuclear power plants.

  • Other Industries

    Valves control fluids in multiple industries such as new energy and electronics, ensuring safe and efficient production.

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