Customized Backwash Pilot Filter Elements for Coal Mines
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Customized Backwash Pilot Filter Elements for Coal Mines

Customized Backwash Pilot Filter Elements for Coal Mines

This is a specialized coal mine backwash pilot filter element for coal mine electro-hydraulic control directional valves. The upper end has a brass threaded body, and the filter body adopts a stainless steel multi-layer folding sintered filter structure. Both ends are equipped with red emulsion resistant sealing rings, and the threaded installation is built into the pilot valve body to intercept small impurities in the emulsion and protect the precision sealing pair of the pilot valve core.

Structural composition

  • The main body is machined with brass, with an external threaded structure and a top shaped inner hole, suitable for disassembly and assembly with specialized tools;
  • The filter element is a stainless steel folding metal filter, which has a larger filtering area under the same volume;
  • Double layered red O-ring seals are installed at both ends to achieve end face sealing and prevent medium bypass;
  • Split compression structure, stable pressure bearing, suitable for narrow pilot valve chambers.
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Core advantages

  • Folding filter design, with a large effective filtering area, strong dirt holding capacity, and longer service life
  • Brass shell is rust resistant and wear-resistant, suitable for wet working conditions underground
  • Multiple sealing rings are used to prevent short circuits in unfiltered media, ensuring stable filtration accuracy
  • Precision thread size, universal interchangeability of mainstream electro-hydraulic control bracket pilot valves
  • All metal filter material, resistant to emulsion corrosion, washable and reusable
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Technical Specifications

 

Upper shell

Brass

Filter material

Stainless steel folding sintered filter screen

Sealing element

Emulsion resistant rubber O-ring

Applicable medium

Coal mine hydraulic support emulsion

Installation form

Threaded screw in valve chamber built-in installation

 

Application fields

The electric hydraulic control hydraulic support, pilot control valve, and electromagnetic pilot valve in the coal mine comprehensive mining face are equipped with precision filters.

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Customer feedback

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FAQ

Q: How long is your delivery time?

A: Generally it is 3--5 days if the goods are in stock, or it is 10--15 days if the goods are not in stock, also according to the quantity you need.

Q: How does a backwash filter work?

A: The backwash is an operation in which water passes backward through the filter at a rapid rate. It enters the tank at the bottom via the riser tube, then passes upward through the filter medium, exiting at the top, via the control valve.

Q: What is the backwash filter on a ship?

A: Auto Back wash filter: An auto backwashing filter is a self-cleaning filtration system that automatically reverses the flow of water or fluid through the filter media to remove accumulated debris and maintain its efficiency.

Q: Why Choose us?

A: Quality: 100% leakage, material, and functionality test in process and before shipping.
Variety: Highly customizable flexibility.
Reliability:15 years of manufacturing experience.
Efficiency: Quick& Effective response.
Utility: Direct link from Manufacturer.
Flexibility: OEM/ODM are provided.
Authentication: Real-time plant audit provided.
Competitiveness: Price is negotiable on large volumes.
Authentication: Real-time plant audit provided.
Competitiveness: Price is negotiable on large volumes.

Q: Spool Application Position?

A: The spool of the hydraulic support control valve is installed in the hole at the center of the control valve sleeve.

 

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