Home > Products

Cast Iron Flange Gate valve

Product introduction:

Gate valve is a widely used valve, which is sealed by contacting the valve seat and gate. Usually, the sealing surface will be overlaid with metal materials to increase wear resistance.It can only be fully opened and closed, not adjusted or throttled.

There are rigid gate and elastic gate, according to the different gate, gate valve is divided into rigid gate valve and elastic gate valve.

  •  class=
  •  class=
Precautions for installation of Gate valves:

1. The installation position, height and inlet and outlet direction must meet the design requirements, and the connection shouldbe firm and tight.

2. Handle of all kinds of manual valves installed on the insulation pipeline shall not be downward.

3. The valve must be inspected before installation, and the nameplate of the valve should comply with the current national standard GB 12220.

4. Handwheel, handle and transmission mechanism are not allowed to be used for lifting, and collision is strictly prohibited.

5. Gate valves with driving mechanism should be installed according to the instructions of the product.


Inventory and Quality Control

class=  class=

Why do valves always fail?

In the whole process of design,manufacture, installation,working condition,operation and maintenance,every step should not be lax.

The valve inspection process is as follows:

1:Appearance inspection:

(1)Whether there are sand holes, cracks and other defects on the inner and outer surface of the valve body;

(2)Whether all parts of the valve are damaged, whether the valve body is marked, etc;

2:Performance test

3.Shell strength test

4.Sealing test

5.Action performance test

6.Vacuum sealing test

Company qualification


Our service

class= class=



Exporting country



Please Feel free to give your inquiry in the form below.we will reply you in 24 hours.

  • *
  • *
  • *
Home Tel Mail Inquiry