PRESSURE SEQUENCE VALVE TYPE DZ5DP NG 5 Pressure sequence valves are used for connecting a second hydraulic system when pressure in a main system reaches the set value. The valve can be mounted in systems in any positions. The sequence valve comprises the housing 1, control spool 2, pressure spring 3, pressure setting element 4 and optional check valve 5. Sequence pressure is adjusted by means of the pressure setting element 4. The spring 3 holds the control spool 2 in neutral position and the valve is closed. Pressure in line P affects the spool surface opposite the spring 3 via the control line 6 and jet 6. When the pressure in line P reaches the value set, the con- trol spool moves and opens the connection A to B. The hydraulic system connected at port A is actuated, without any decrease in pressure at port P. Supply of control fluid may also be external, via port X. Depending on the valve application, the pilot fluid drain is either external via port T (Y) or internal. A check valve 5 may be mounted for free flow through the valve from B to A.

TECHNICAL DATA Hydraulic fluid Mineral oil or phosphate ester Nominal fluid viscosity Viscosity range Optimum working temperature( fluid in a tank ) Fluid temperature range Required fluid filtration Recommended fluid filtration Max allowable flow rate OVERALL DIMENSIONS 1 - Adjustment by handknob =1 2 - Adjustment by set screw with internal hexagon =2 3 - Adjustment by lockable handknob =3 4 - Sealing ring - o-ring 7 × 1.5 at ports P, A, T (Y), B (X) - Admissible surface roughness and flatness deviation for a subplate face. WK 450 447

PERFORMANCE CURVES, Basic version Internal pilot supply Internal pilot drain Version X External pilot supply Internal pilot drain Version Y Internal pilot supply External pilot drain Version XY External pilot supply External pilot drain Without check valve With check valve

HOW TO ORDER Orders coded in the way showed below should be forwarded to the manufacturer. Adjustment method Hand knob Set screw with internal hexagon Lockable hand knob Further requirements in clear text ( to be agreed upon with the manufacturer ) Series number Fluids on mineral oil base = with no code Fluids on phosphate-ester base 20 = 20 ( 20 - 29 ) - installation and connection dimensions remain unchanged Check valve With check valve Without check valve Pilot supply and drain Pilot Pilot Pilot Pilot CONNECTION DIMENSIONS FOR SUBPLATES Subplate G 115/01 ( G1/4 ) Weight - 0.7 kg suply internal,...

1 - valve mounting surface 2 - recess in subplate face Fixing bolts : M5 × 50 - 8.8 PN - 87/M - 82302 ( DIN 912 ) - 4 pcs , torque = 9 Nm Note : Subplate and fixing bolts must be ordered separately

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