Sparkproof relief valve SPRV 220

SKU:
808050.0220
Stock:

On backorder

450.85 

Sparkproof relief valves provide the automatic closure of the pipe’s cross-section, when the blower is turned off, in order to avoid the return of the air in the piping.

Additional information

ModelDiameter, mmMaterialMetal thickness, mm
SPRV 220

220

Black metal (painted)

2

ModelSPRV 220
Diameter, mm

220

Material

Black metal (painted)

Metal thickness, mm

2

Description

ModelDiameter, mmMaterialMetal thickness, mm
SPRV 220

220

Black metal (painted)

2

ModelSPRV 220
Diameter, mm

220

Material

Black metal (painted)

Metal thickness, mm

2

Sparkproof relief valves provide the automatic closure of the pipe’s cross-section, when the blower is turned off, in order to avoid the return of the air in the piping.
Those valves consist of casing with two flanges; there is an eccentrically installed blade on two semi-axles inside of it, which turns easily on supports. Counterbalance is installed on one of semi-axles of the valve, it keeps the blade closed, when the blower is not working. Valve’s blade is opened by the air flow force and automatically returns back (closes) when there is no air supply. When the blower starts counterbalance ensures smooth opening of the valve in the beginning of air flow movement.
Those valves can be used in ventilation systems with pressure 1500 Pa and air flow speed 15-20 m/sec. Relief valves can be installed either on horizontal or in vertical section of piping. When installed vertically, the air flow direction should be upwards.
In order to avoid any sparks initiation parts of the valve in contact with each other during the working process, are made of different metals: blade is made of black metal and its outline is made of aluminium. Where there is a friction between axle and casing, brass hubs are installed.

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