Product
Parallel Double Gate Valve
Parallel double gate valve adopts unique metal contact type structure, reliable action, has extremely high cutting performance, widely used in emergency cut-off valve and vent valve under high pressure to very low temperature conditions. In addition, the metal contact structure itself has a fire prevention function.
1. Hydrogenation unit 2. high temperature steam condition 3. hot oil condition 4. tank area
1. Prevent high temperature rise to death
2. Top installation design, can achieve online maintenance
3. Two-way forced pre-tightening sealing, sealing is more reliable
4. Zero leakage can be achieved
5. Open force is small
Structural Characteristics
Instructions
Small opening force
The wedge of the wedge block of the parallel double gate valve is much greater than the self-locking Angle, which is labor-saving and requires less power.
Inverted seal design
When the valve is fully open, the end of the valve stem and the hard alloy surfacing sealing surface of the valve cover produce a metal seal. At this time, there is no medium pressure at the packing, so the root packing can be replaced online.
Open structure design
The open structure design can provide large forced seal pre-tightening force, make the seal more reliable.
Valve cover diversification
The valve cover can be made into a variety of structures according to the actual working conditions, such as toxic media using bellows sealed valve cover, high temperature using heat dissipation valve cover, high pressure using self-sealed valve cover, to ensure the safe and reliable use of the valve.
Packing loading design
Packing of low leakage packing, packing with dish spring loading design, long-term sealing more reliable.
Stem surface extrusion process
Through the advanced surface extrusion technology to improve the surface hardness of the stem, reduce the roughness, can reduce the valve in the switching process of the packing wear, and prevent the stem strain.
Fire-protection design
The middle flange is sealed with metal winding pad, with good sealing performance and fireroof function.
Unique wedge mechanism
The sealing structure composed of two parallel gates and wedge tightening device replaces the traditional wedge gate valve structure, making the valve opening and closing process more easy.
Inherent high temperature resistance design
The valve interior all metal design, can withstand high temperature medium. The wedge block is designed with large wedge angles, even under high temperature conditions, the wedge block can be easily pulled out without rising death.