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Operating Instructions
3.4
Design and function
3.4.1
Design Pressure reducing valves type 582
10
13
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 Control Valves Type 582/586
1
2
Pos.
Name
3
1
Cap
4
2
Locking nut
5
3
Spindle/adjusting screw
6
4
Spring retainer
7
5
Bonnet assembly (top part)
6
Inner spring
7
Outer spring
8
Compression piece
8
9
Retaining ring
9
10
Diaphragm
11
Piston
14
12
Body
13
O-rings
11
14
Inner body
Cartridge
Diaphragm, O-rings, diaphragm washer, inner body and
12
piston constitute the cartridge.
11
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