145 → www.festo.com/didactic Hydraulics Training Packages > Components > Hosing, Distribution/Other Components Hydraulics Hosing, Distribution/Other Components 1 4-way return header, unpressurized Plate with five connections to combine several safety-relevant return lines. The open quick coupling plug is returned to the tank of the hydraulic power unit. – Maximum permissible pressure: 1 MPa (10 bar) – Four self-sealing coupling sockets – One tube (2 m) with open quick coupling plug Order no. 573026 2 Tubing line for unpressurized return For connecting open connection nipples with the return header or the junction box on the hydraulic power unit. – Maximum permissible pressure: 1 MPa (10 bar) – One side with open quick coupling plug, one side with coupling socket – Length: 1200 mm Order no. 573024 3 Pressure relief unit The pressure relief unit is placed on the low-leakage, self-sealing coupling nipple in order to force it open without great effort. This allows hydraulic pressures that are locked in to be relieved. Order no. 152971 4 Sub-base Sub-bases with four G¼” threaded connections and valve connection patterns to ISO/DIN 4401. For the adaptation of any valves. – Quick-action mounting system Quick-Fix Size 02 (NG4) connection pattern, B left, A right Order no. 572152 Size 02 (NG4) connection pattern, A left, B right Order no. 572153 Size 03 (NG6) connection pattern, B left, A right Order no. 669198 Size 03 (NG6) connection pattern, A left, B right Order no. 8201565 5 Diaphragm accumulator with shut-off block The following functions are available via the three-way ball valve integrated in the shut-off block: 1. Open connection between P and the diaphragm accumulator 2. Closed connection between P and the diaphragm accumulator 3. Open connection between T and the diaphragm accumulator (relief) – Safety valve against overload – Pressure gauge for working pressure – Nominal volume: 0.32 dm³ – Medium, gas side: nitrogen (N) – Gas filling pressure on delivery: 1 MPa (10 bar) – Operating pressure: 6 MPa (60 bar) – Maximum permissible pressure: 12 MPa (120 bar) – Low-leakage, self-sealing coupling nipple for P – Tubing with open quick coupling plug for T Order no. 152859 Accumulator filling device For filling or refilling the gas side of the diaphragm accumulator (order no. 152859) with nitrogen (N). The accumulator filling device can be operated directly with a commercially available nitrogen cylinder. When using a pressure reducer, manufacturer-specific adapters may be required. Order no. 92491 1 2 3 4 5 6 6 Pressure filter, 5 μm The pressure filter, used directly after the pump, reliably protects downstream hydraulic elements from solids suspended in the oil. The required cleanliness class depends on the most sensitive element in the system. – Contamination indicator – Maximum permissible pressure: 12 MPa (120 bar) – Low-leakage, self-sealing coupling nipples – Quick-action mounting system Quick-Fix Order no. 548609 Replacement filter cartridge for the pressure filter Order no. 236302
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