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Shanghai jingtai industrial (group) co., LTD
Shanghai jingtai industrial (group) co., LTD
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78-40-Airset-HR

78-40-Airset-HR

Affiliate classification:

Accessories

Products Detail

Product Description:

The 78 Series pressure regulators are compact, lightweight,high-performance pressure reducing valves. They are usedprimarily for supplying a stable source of air to process controlequipment such as current to pneumatic transducers andcontrol valve positioners.

Principle of Operation

Rotation of the pressure setting knob compresses the range springagainst the diaphragm plate, opening the main supply valve. Asthe outlet pressure increases, it flows through the aspirator andacts on the lower side of the diaphragm causing it to move upwarduntil it balances the force of the range spring. This balancedcondition maintains constant output pressure with changes insupply pressure and output load. If the output pressure rises abovethe set pressure, the relief valve opens and bleeds the excesspressure to atmosphere.Should dirt or other foreign substance lodge under the inlet valveseat resulting in increased outlet pressure, the additional pressureexerted on the diaphragm will cause the relief valve to open,relieving the excess air through the relief valve seat and springcase vent to atmosphere.

Features and Benefits

Excellent pressure regulation.

Lock screw ensures output pressure remains at desired value.

Small size and light weight allows the regulator to be nipple

mounted in most installations, eliminating the need for a

mounting bracket. A mounting bracket is available if required.

Two pressure gauge ports allow installation of gauge on either

side for flexibility when mounting.

Soft seat plug on main valve provides positive shutoff.

Sintered polyethylene filters provide 5 micron filtration rating.

Stainless steel drain.

Corrosion resistant finish and stainless assembly hardware

permit use in corrosive environments.