700-30
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Catalog excerpts

700-30 - 1

PRESSURE REDUCING VALVES without leak-oil connection, pmax. 500 bar General information: Important information: Pressure reducing valves are ideal for the application in static leak-oil free clamping systems, which are decoupled by a pressure pump unit. Since this pressure reducing valve does not have a leak-oil port, an supply pressure rise might not be compensated. The function of the pressure reducing valve is to maintain the outlet pressure A on the consumer also with variable, always higher supply pressure P constant. Reasons for such an unwanted pressure rise can be for example: warming, external influences, effects by foreign matter (chips) in the valve seat etc. Overload balance is not possible due to this pressure reducing valve version. Function: Once the supply pressure equals the adjusted outlet pressure, a check valve completely blocks the oil flow. Therefore, the pressure can not increase any more. Until the adjusted outlet pressure is acquired, the hydraulic oil can easily flow from P→A through the valve. A pressure spring opens the oil flow against the supply pressure, as soon as the outlet pressure, e.g. due to the consumer, decreases. This makes the hydraulic oil flow until the initial pressure is acquired again. HYDROKOMP recommends installing a pressure reducing valve between the valve and the consumer. The opening pressure adjusted for the pressure reducing valve may not exceed the max. permissible operating pressure of the consumer. If possible, it should be approx. 10% above the outlet pressure. Other designs are available on request The outlet pressure can be adjusted by a pressure gauge which also allows the visual control of the outlet pressure. Advantages: Optimal use of clamping force with cylinders and cylinder groups Automatic adjustment for outlet pressure Ideal for static clamp systems No leak-oil tubes Housing with pressure gauge port Varied settings possible Installation screw-in valve: For illustration see page 2 1. Turn back the counter- and sealing nut right to the end position. Screw-in valve Pipe connection Manifold connection Application example: 2. Now screw in the valve housing and fasten it with 70 Nm. (metal sealing to 118° counter bore) 3. Fasten the counter- and sealing nut with 60 Nm. The sealing is made with support of the enclosed edge seal on the 30-mm countersink diameter. 4. For dismantling please proceed in the opposite order. Hydraulische Komponenten GmbH If throttle check valves and sequence valves are to be combined in sequence with the pressure reducing valve, the order described in the example must be considered. 700-30 / 02-13 *Subject to change without notice, compare issue no. at www.hydrokomp.de. Siemensstraße 16, 35325 Mücke (Germany) Phone: +49 6401 225999-0 Fax: +49 6401 225999-50 E-mail: info@hydrokomp.de Internet: www.hydrokomp.de

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700-30 - 2

Pressure reducing valves / Designs A/F17 Technical data: 2-way poppet valve arbitrary G1/4 G1/4 G1/4 500 bar according to diagram (1) up to 380 bar according to diagram (2) 10 l/min according to diagram (3) HLP 22, DIN 51524, ISO VG 10...68 DIN 51519 Recommendations 10...50 mm²/s -40...+80°C Screw-in Pipe Manifold or Pipe 0,7 kg 1,3 kg 1,5 kg DRSVE-500-5-001 DRSVE-500-5-002 DRSVE-500-5-004 Valve housing A/F24 torque 70 Nm Port for pressure gauge adjusted outlet pressure pA [bar] 300 (3) ∆p-Q nominal line (P→A und A→P) if pP < pA opened valve, at oil viscosity 50 cSt O-ring 10x2 within scope...

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