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Brass Nut Type Gate Valve

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Description

Resilient-seated gate valve with bolted cover connection; made of ductile iron materials and with epoxy coating, designed as both clockwise and anti-clockwise directions.Gate valve is mainly used to connect and cut off the medium in the pipeline by rotating the stem. For installation in pipelines and water distribution networks,irrigation, sanitation systems.Used to close off pipes and facilitate work on the network of pipes. 




Connection :         Double Flanges

Flange dimension:    EN1092-2 / BS4504

Face to Face Length:  DIN F4 / DIN F5 / BS 5163

Temperature range :  0 ~ 80℃

Medium : Neutral water,Drinking water , Sewage

Sealing : Class A (zero leakage)

WRAS epoxy powder coating 300㎛.


Size DN40-DN300
Pressure PN10 / PN16 / PN25
Operating Handwheel / Cap
Sealing Form
Flexible Seal
Painting Epoxy Spreying


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Stem of double helix made in one piece in stainless steel for better resistance to axial load and to withstand higher operating torques.

Bolts sealed with hot melt glue with purpose of rust-proof in moisture enviroment.

EPDM + DI disc reduces the wear of the wedge against the body, allowing a smooth functionality and a longer life time of the valv. Liner sealing face getting better sealing &lower closing torque.Position Apush the disc shift and press to valve body.

Handwheel is made of GGG50 by turning to the left or counter clockwise, when viewed from the stem(clockwise closing).

Rubber Dust guard integrating three O-ring shape, prohibiting the introduction of foreign bodies at the stem.

Brass nut type 4 O-rings on stem (total 6 O-rings in bonnet) The upper 3 O-rings can be replaced online under pressure when valve fully opened,ensuring smooth thread edges and low operating torques. 

Valve body is made of ductile iron with epoxy coating minimum thickness of 300.



Technical Data

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Attention:

1.The valve is installed independent of the flow direction of the medium.

2. After the valve is assembled, the thread of the bolt/stem shall be greased to prevent corrosion and facilitate subsequent disassembly.

3. Do not use the valve for pipe pressure regulation, gate valves generally play the role of a switch, to achieve a good adjustment effect, it is recommended to choose a professional regulating valve, water erosion will affect the service life of the valve disc.

4Do not use valves with EDPM for gaseous fluids.


Installation instructions

1. Notice of water stop shall be issued before construction.

2. The water in the road should be avoided in the front row of construction.

3. Electricity for construction must be guaranteed.

4. It is strictly prohibited to use hand wheel, handle and transmission mechanism for hoisting and collision is strictly prohibited.

5. Lubricate the valve at least once a month if it is in frequent use.