The G81H grooved fire protection strainer is a critical safety component designed for modern fire sprinkler systems, hydrant networks, and automated fire extinguishing systems. Utilizing a Y-pattern structure and a fast-assembly grooved interface, this strainer is specifically engineered to intercept solid particles, rust, and weld slag within the fire water piping. By acting as a protective barrier at the inlet of alarm valves, nozzles, and fire pumps, it prevents equipment clogging and mechanical damage during emergency deployment. The G81H series is coated with high-performance epoxy resin (standard fire red) inside and out, providing exceptional corrosion resistance and meeting the rigorous reliability standards of the fire protection industry.

G81H  Grooved End Fire Fighting Strainer Product Diagram

1.Rapid grooved connection:The grooved interface design allows for quick installation using standard couplings, significantly reducing construction time compared to traditional flanged connections. It also provides excellent vibration resistance and seismic performance for the piping system.
2.Optimized high-flow Y-pattern:The streamlined internal cavity is designed to minimize turbulence and flow resistance. The large effective filtration area ensures a high flow coefficient (Kv), maintaining the required water pressure and volume during fire suppression.
3.Durable corrosion-resistant coating:The body is manufactured from high-strength ductile iron and treated with a fusion-bonded epoxy coating. This heavy-duty layer prevents internal rust and external oxidation, ensuring a long service life in damp environments.
4.Precision stainless steel screen:The internal filter element is made of premium stainless steel with specific mesh sizes optimized for fire nozzles. It offers high mechanical strength and resistance to pressure surges without deforming or rupturing.
5.Simplified maintenance and cleaning:Featuring a removable grooved end cap at the bottom, the filter element can be easily extracted for cleaning or replacement without specialized tools. This modular design significantly reduces system downtime.
6.Reliable sealing performance:Utilizing EPDM or Nitrile gaskets tailored for fire systems, the strainer provides a secure, leak-free seal. The flexible nature of the grooved joints accommodates thermal expansion and minor piping misalignment.
7.Compact and lightweight design:The grooved structure is more compact and lighter than flanged alternatives, making it easier to install in tight fire pump rooms and overhead sprinkler layouts.
8.Standardization and compatibility:Fully compliant with international and domestic fire protection piping standards, ensuring high interchangeability with various brands of grooved couplings and fire equipment.

G81H  Grooved End Fire Fighting Strainer Structure Diagram

List of Component Names and Materials

Performance Specification Sheet

Standard requirements for external dimensions

1. The structural length of the valve shall comply with the standard of GB/T12221

2. Connecting flanges according to GB/T17241.6 standard

G81H  Grooved End Fire Fighting Strainer Outline Diagram

Outline dimension table