Design And Function - GF 582 Betriebsanleitung

Operating Instructions
3.4

Design and function

3.4.1 Design Pressure reducing valves type 582 HP
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Function
On the side of the valve outlet, the pressure acts via the diaphragm on the adjustable spring. A balance of forces is established via
the preloaded spring, which is set with the adjusting screw at the valve. If the outlet pressure increases above the specified value,
the piston is lifted against the spring force. The valve closes, and the outlet pressure is reduced. If the outlet pressure decreases
below the value, the piston is pushed down by the spring resistance. The valve begins to open, until the balance is reached again.
Independent of an increasing or decreasing inlet pressure, the outlet pressure remains constant to the greatest possible extent,
because it is not directly related to the inlet pressure.
Pressure Reducing Valve Type 582 HP High Purity
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2
Pos. Name
1 Cap
3
2 Locking nut
4
3 Spindle/adjusting screw
5
6
4 Spring retainer
7
5 Bonnet assembly (top part)
6 Inner spring
7 Outer spring
8 Compression piece
8
9 Retaining ring
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10 Diaphragm
11 Piston
14 12 Body
13 O-rings
14 Inner body
Cartridge
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Diaphragm, O-rings, diaphragm washer, inner body and
piston constitute the cartridge.
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