Shangyu Group Co., Ltd.

Product Description:

Connection dimension of flange:
PN1.0MPa, PN1.6MPa to GB4216
PN2.5MPa to GB9113

Purpose:

For the pipeline of fire fighting, domestic water, industrial water supply and sewage treatment. Can quickly get response to the pressure fluctuation and quickly release in order to prevent from the damage of pipe line and equipment caused by quickly increasing the pressure. It is very suitable for pressure relief of the fire systems in the high buildings. Can ensure the upper water supply pressure of the main valve.

Suitable temperature: ≤ 80o C

Advantages:

. Exactly keep the safe stable pressure. Once exceeding the pressure, the pressure-relief valve can fully open and in time relieve the pressure.
. The speed of closing is adjustable. The pressure fluctuation can be dispelled.
. The diaphragm driving mechanism can reduce the hysteresis effect at the least.
. Can be installed in any position. It is unnecessary to change the preset pressure. Can examine and repair it after disma ntling from the pipeline.

Pressure rating: PN (MPa)
1.0 1.6 2.5

Tests:

Test to JB/T9092, GB/T13927
Nominal pressure: PN(MPa)
Body: PN X l. 5
Seal: PN X l. 1

Materials:

Body: Cast iron, ductile iron, carbon steel

Bonnet: Cast iron, ductile iron, carbon steel

Compression spring: Silicon manganese steel

Cylinder liner: Stainless steel

Diaphragm clamping: Ductile iron

Plate

Diaphragm seat: Cast iron, ductile iron, carbon steel

Piston: Ductile iron, bronze

Diaphragm: NBR rubber

O-ring: NBR rubber

Stem: Stainless steel

Disc: Ductile iron, bronze

Gasket: NBR rubber

Gasket: Clamping Ductile iron, bronze

Plate