Explosion proof electric gate valve

一、 ZJK941H-25 dn400Explosion proof electric gate valveIntroduction:

The power supply voltage is 380V and 660V, and this type of electric gate valve must have a coal safety certificate before entering the mine. Features of the electric device: It has mining and coal safety certificates, and the explosion-proof protection level is IP68. MZ941H-160C, MZ9B41H-160C, MZ941H are suitable for flammable and explosive environments, with high safety factors, strong operational functions, and stable performance.

ZJK941H-25 DN400Explosion proof electric gate valveFeatures:

The valve disc adopts a double gate plate with a universal top structure in the middle, which can automatically adjust the degree of fit between the valve disc and the sealing surface of the valve seat to ensure the sealing of the valve. At the same time, this structure is easy to maintain, saves costs, and has good interchangeability of valve discs.

The sealing surface of the valve disc and seat is made of cobalt chromium tungsten hard alloy by plasma spray welding. The sealing surface has high hardness, wear resistance, abrasion resistance, and long service life.

The valve stem is made of nitriding steel, with surface nitriding treatment, high hardness, scratch resistance, corrosion resistance, and long service life.

The electric device is equipped with a torque control mechanism, on-site operating mechanism, and manual/electric switching mechanism. In addition to on-site operation, remote operation, PLC control, and intelligent control of 4-20mA current input and output can also be performed.

Manual valves are opened by a manual mechanism or a handwheel upon impact. Reduce valve operating force.

Valves can be installed at any position in the pipeline, and carbon steel or alloy steel valves can be selected based on the medium and its temperature.

When installing and debugging for the first time, the valve must be manually opened to about half of the position to avoid damage to the valve or electrical components caused by reverse motor phase sequence connection.

With the improvement of coal mining automation, manual valves on various underground pipelines can no longer meet the requirements of automatic control. Some mines use hydraulic valves and electro-hydraulic valves during renovation, but the seals of hydraulic valves and electro-hydraulic valves are prone to aging and require annual maintenance. When the pressure difference is large, manual pressure reduction is required before opening, and they cannot be directly integrated into automation system control.

Structure and characteristics:

1. The selection of materials is meticulous, in compliance with relevant domestic and international standards, and the overall quality of the materials is high.

2. Meets the requirements of domestic and international standards, with reliable sealing, excellent performance, and beautiful appearance.

3. The sealing pair is matched reasonably, and the sealing surfaces of the gate and valve seat are made of different hardness Slite cobalt based hard alloy welding, which is reliable in sealing, high in hardness, wear-resistant, high-temperature resistant, corrosion-resistant, scratch resistant, and has a long service life.

4. The valve stem has undergone quenching and surface nitriding treatment, exhibiting excellent corrosion resistance, abrasion resistance, and wear resistance.

5. Adopting a wedge-shaped elastic gate structure, thrust bearings are installed on the medium and large diameters, with low friction, and equipped with manual impact for easy and smooth opening and closing.

6. Various piping flange standards and flange sealing surface forms can be adopted to meet various engineering needs and user requirements.

Our company solemnly promises:

a. The performance of the product meets national standards and relevant regulations for superior products.

b. After the product arrives, if there is any non-compliance with the contract requirements during the customer acceptance process, our company will respond within two hours after receiving the customer's notification.

Nominal pressure: PN10~PN16

Caliber: DN50-DN1800

class：150lb 2'-72'

Working temperature: rubber ≤ 80 ℃, PTFE seal: ≤ 180 ℃, hard seal: ≤ 425 ℃, stainless steel 304: ≤ 600 ℃ Temperature depends on the material and medium, suitable medium: sugar paddle, paper paddle, sewage, coal mine, ash, slag water mixture and other materials

Product Features:

Quick opening and closing, reliable balance, high degree of automation.

The installation height and position are not limited.

Adopting explosion-proof electric devices, it can work normally in flammable, explosive, and even hazardous environments.

Equipped with manual control, in case of power interruption, the valve can be manually opened or closed to effectively control the medium and prevent accidents from occurring.

Execution standards:

Design and Manufacturing: JB/T8691-1998

Structural length: GB/T15188.2-94

Flange connection: GB/T9113.1-2000 JB/T79-94

Testing and Acceptance: GB/T13927-92