Product Attribute:
Applicationt:
Zhonghua
Production Description:
Product overview
Nominal pressure1.02.5MPa
Working temperature080 degree centigrade
standard of the flangeGB/T 17241.6 GB9113
Nominal diameter50400mm
Applicable mediumWater, oil, gas, etc
Test standardGB13927 AP1598
Product use:
Resilient seated gate valve,Except possesses the advantages of seal gate valves of the elastic base seat, and can be more intuitive valve opening, the opening and closing fast and reliable, reason often used fire and industrial system. Generally installed on higher position off the ground.
Product structure features:
The whole package plastic valve core
Ductile iron skeleton inside and outside the high-performance rubber and vulcanized with the latest technology is adopted to improve the overall coating, laminating tightly solid, geometric size accurate, sealing good elasticity, complete isolation valve core metal and fluid, corrosion resistance.
One-piece copper nut
Valve core of the copper nut and ductile iron skeleton, using special technology closely connected as a whole, to ensure the long-term operation and it will not loosen under running water, avoid to cause the valve control failure.
Flat type seat
The company seal gate valves with straight through whole basin at the bottom of the design of the elastic base seat, equivalent to pipeline, not easy to pile up sundry, ensure reliable sealing and fluid unimpeded.
Since the seal bonnet
Between the valve cover and the body using the sealing structure is designed, in the range of the allowable pressure fluid pressure is higher, sealing the closer.
The special seal
Between the valve stem and valve cover sealing structure, adopt three o ring design, compared with the traditional packing seal structure of gate valve, tight across the friction resistance.In the valve in any opening, pressure and have stem safety lock function, to ensure that the stem will not be in the process of operation and maintenance of the pressure out, avoid to cause injuries
Light structure
the maximum working height than traditional gate valves reduce more than 60 mm - 300 mm, save engineering space;Ontology with nodular cast iron materials, weight than traditional gate valves reduce about 20% - 20%, convenient installation and maintenance.
Food grade hygiene requirements
Inside of the body and the valve core to non-toxic epoxy resin coating, inside and outside surface completely coated with rubber, there will be no water rust or corrosion phenomenon, can be directly used for domestic and drinking water system, food and pharmaceutical industries.
The major parts material:
valve body:Gray cast iron, nodular cast iron, cast steel
valve plate:Ductile iron + epdm or NBR
mouth mat:Nitrile rubber, epdm
Sealing ring:Nitrile rubber
Frame:Grey cast iron, cast iron, cast steel ball ink
Valve stem:Stainless steel
Screw bolt:Stainless steel
Gland:Ductile cast iron, cast steel
Stem nut: Copper alloy
Hand wheel (the cap):Malleable iron