Z41X Fire specific rising stem elastic seat sealing gate valveDetailed product description：

Z41X Firefighting Special Rising stem Elastic Seat Sealing Gate Valve

Fire special rising stem elastic seat sealing gate valve Product model: GFZ45X

Product reference standards:
Nominal pressure: 1.0-2.5MPa Working temperature: 0-80 ℃ Flange standard: GB/T 17241.6 GB9113
Nominal diameter: 50-400mm Applicable medium: water, oil, gas, etc. Test standard: GB13927 AP1598

Product Usage

In addition to the advantages of an elastic seat sealed gate valve, the fire special open stem elastic seat sealed gate valve can also display the degree of valve opening more intuitively, so that the valve opening can be judged from a distance and corresponding measures can be taken in a timely manner. Quick and reliable opening and closing, therefore commonly used in fire protection systems.

Structural characteristics of Z41X fire special rising stem elastic seat sealing gate valve:

Integral rubber coated valve core
The ductile iron skeleton is covered with high-performance rubber and the latest vulcanization technology both inside and outside, ensuring a tight and reliable fit, precise geometric dimensions, and excellent sealing elasticity. It completely isolates the valve core metal from the fluid and is corrosion-resistant.  
Integrated copper nut
The copper nut of the valve core is tightly connected to the ductile iron skeleton using special technology, ensuring that it will not loosen even under long-term operation and water flow impact, thus avoiding control failure of the valve.  
Flat bottomed valve seat
Our company's elastic seat seal gate valve adopts a full basin straight through design at the bottom, which is equivalent to a continuous pipeline and is not easy to accumulate debris, ensuring reliable sealing and unobstructed fluid flow.  
Self sealing valve cover
The self sealing structure design is adopted between the valve cover and the valve body. Within the allowable pressure range, the higher the fluid pressure, the tighter the seal.  
Specially sealed
The upper sealing structure between the valve stem and the valve cover adopts a design of three O-ring seals. Compared with the packing sealing structure of traditional gate valves, the channel seal is tight and the friction resistance is greatly reduced. When the valve is at any opening, under pressure, and has a valve stem safety locking function, it ensures that the valve stem will not be pushed out by pressure during operation and maintenance, avoiding personal injury
Lightweight structure
The compact structure reduces the maximum working height by over 60mm to 300mm compared to traditional gate valves, saving construction space; The body is made of ductile iron material, which reduces the weight by about 20% -30% compared to traditional gate valves, and is easy to install and maintain.  
Food grade hygiene requirements
The interior of the valve body is coated with non-toxic epoxy resin, and the inner and outer surfaces of the valve core are completely covered with rubber, which will not cause rust or corrosion. It can be directly used in drinking water systems and the food and pharmaceutical industry.

Material description of the main components of Z41X fire special rising stem elastic seat sealing gate valve:

name	material
Valve body	Grey cast iron, ductile iron, cast steel
Gate plate	Ductile iron+EPDM or nitrile rubber
Mid mouth pad	Nitrile rubber, EPDM
seal ring	Nitrile rubber
Bracket	Grey cast iron, ductile iron, cast steel
Valve stem	stainless steel
Bolt	stainless steel
Cover the lid	Ductile iron, cast steel
Valve stem nut	Copper alloy
Handwheel (transmission cap)	malleable iron

Main external dimensions:

DN	fifty	sixty-five	eighty	one hundred	one hundred and twenty-five	one hundred and fifty	two hundred	two hundred and fifty	three hundred	three hundred and fifty	four hundred
L	one hundred and seventy-eight	one hundred and ninety	two hundred and three	two hundred and twenty-nine	two hundred and fifty-four	two hundred and sixty-seven	two hundred and ninety-two	three hundred and thirty	three hundred and fifty-six	three hundred and eighty-one	four hundred and six
Hmin (fully open)	three hundred and twenty-two	three hundred and thirty-two	three hundred and fifty	four hundred and twenty	five hundred and eighty-one	five hundred and eighty-one	seven hundred and thirty-six	eight hundred and eighty-two	one thousand and nine	one thousand and three hundred	one thousand three hundred and eighty
Hmax (fully open)	three hundred and seventy-four	three hundred and ninety-eight	four hundred and twenty-nine	five hundred and twenty-four	seven hundred and twenty-one	seven hundred and thirty-six	nine hundred and forty-two	one thousand and thirty-one	one thousand one hundred and seventeen	one thousand six hundred and fifty-five	one thousand eight hundred and five