Seal seat and seal seat combined sealing structure

I.e. the initial metal to metal seal ", to block the entry of solid particles; rubber, PTFE, plastic, nylon
PEEK and other soft seal as a secondary seal, to ensure zero leakage. However, due to a foreign body in the pipeline accident import
Damage to the soft sealing material, pipeline ball valves are equipped with emergency sealant injection system for temporary
Sealing requirements. Sealed with a rubber ring has a circular, triangular, or other special shapes. Valve Company has its own
The design of the structure and process measures to prevent the rubber ring in the switching process is blown (Blow out) or cut bad. To
Class900 pounds above should be used in the proof Buck (AED) characteristics of the material as the O-ring material. PTFE
Seals, generally tubular mosaic structure, also made of barb-like modular structure designed to ensure the seal
The ring does not blow out and cause seal failure. Sealing seat material Body material, electroless nickel plating spring plus
Contained coil spring can be used to ensure that the initial sealing pressure ratio, spring, the board spring or disc spring, the material is
Inconel X-750. Symmetrical two-way inlet end and the outlet end of the valve seat seal design. This piston-mediated
The quality of the self-sealing structure can be designed according to customer needs into a single piston effect "(Single piston action)
Pressure from the discharge the sealing seat structure and double piston effect "(Double Piston effect) double sealed junction
Constitutive. Single piston effect that the import side seal automatic discharge outlet end chamber pressure.
DBB the functional design DBB functional design is whether the valve is open or closed, the valve cavity pressure relief discharge
, The upstream and downstream ends of the seat should be cut-off (Double Block & Bleed), and allow the drain valve at the
Line valve seat sealing performance test, without affecting the pipeline operation.
steam solenoid valves
Emergency sealing system design emergency sealing system by syringe (Injector) and non-return valve (Check Valve) group
Into, respectively, mounted on the valve body, the outside of the seat at the outer measured at the stem packing. The emergency sealing systems can
Used to prevent or reduce the leakage of pipeline valve sealing seat, clean and flush before the sealant injection,
Specializing in the production of detergents and seal fat, cleaning solvents, or sealing grease from the syringe port with manual or electric tools
Injection, according to instructions provided by the valve supplier for cleaning and emergency sealing operation. Fire safety and
Anti-static design described in the supporting shaft seal seat section, anti-static structural design, 24VDC measured
Fixed, the resistance value does not exceed 10 ohms.

pneumatic hand valve