Safety valve PNT-SV

Price: on request

APPLICATION

The PNT-SV safety valves are designed for protection against too high-water pressure on electrical water heaters.
Safety valves are designed for nominal pressures of 0.6 MPa, 0.7 MPa and 0.8 MPa.

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Description

CONSTRUCTION

Valve body made of brass by hot stamping with tooling machining.
Internal parts are made of plastic by injection molded.
The sealing gaskets are of rubber adequate to its working conditions.
All springs are of stainless steel.

Safety valves can release following functions:

The safety valve „A” opens the pressure relief port „1” for the outflow of water when the
pressure in the tank increase over its permissible limit.
The check valve „B” for filling the heater with water. It also prevents the outflow of water from
the tank back into the supply line in case of pressure failure.
The return valve „C” opens the outflow of water from the tank into the supply line in case of an
excessive pressure rise in the tank exceeding supply line pressure. It makes possible to decrease
the pressure in the tank without uptake of hot water from it.

MOUNTING

These valves should be installed in the water supply line of the heater.
The direction of flow should be in accordance with the arrow marked on the valve body with the
passage „1” downwards.
The water supplying line should be stable to 90°C temperature at least 5 m before heater.
It is possible to connect the flexible pipe to passage „1” for discharge of flowing water. This pipe
should have inside diameter 10 mm, max. length 1,2 m and must be stable to 80°C temperature.
The water supplying pressure cannot exceed the nominal pressure to avoid discharge of water
from the heater.

TECHNICAL DATA

Type	Body material	Connection	Opening Pressure, MPa
PNT-SV-0,6	Brass CW617N	G1/2”	0,6+0,1
PNT-SV-0,7	Brass CW617N	G1/2”	0,7±0,05
PNT-SV-0,8	Brass CW617N	G1/2”	0,8±0,05

Safety valve PNT-SV

Safety valve PNT-SV

Description

CONSTRUCTION

MOUNTING

TECHNICAL DATA

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