2/2-way logic valves type URZS
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2/2 WAY CARTRIDGE VALVE TYPE URZS 16 COVER FOR CARTRIDGE VALVE TYPE ULZS 16 size 16 2/2 way cartridge valve type URZS 16 can be used to build hydraulic systems as a pilot operated check valve or by combination several elements as a multiple directional control block. DESCRIPTION OF OPERATION 2/2 way cartridge valves − inserts comprise the cartridge assembly and the cover 1 with the control bores. The cartridge assembly is composed of the sleeve 3, the spring 4 and poppet with an optional dumping nose 5 or without it 6. The valve poppet is held on its seat by means of the spring 4. There is free flow from A to B or reversely from B to A. The valve poppet is graded, so that there are three impor− tant surfaces for the operation. The area of the seat A1 is assumed as 100 %. The annulus area A2, resulting from the grading is 7 % or 50 % of area A1, depending on the version. The area ratio A1 : A2 is therefore either 14.3 : 1 or 2 : 1. The area A3 is A1 + A2 and can be either 107 % or 150 % of area A1. The area A3 remains unchanged. When the annulus area changes, then the surface area A1, which is regarded as 100 % also changes. The valves opens in both flow directions ( port X is unpressuriezd ) if surface A3 is not affected by pressure force affecting the adequate sur− faces A1 and A2 exceeds the spring force. If control pres− sure affects surface A3, the valve poppet is pushed onto its seat, irrespective of the spring force. The valve may be opened by unloading surface A3 or by suitably high pressure in port A or B. An orifice 2 fitted in port X allows to select the opening curve and the valve opening time.

TECHNICAL DATA OVERALL DIMENSIONS FOR URZS 16 VALVE SEAT DIMENSIONS FOR URZS 16 Cover is mounted to the valve seat by means of 4 bolts M8 x 40 - 10,9 PN - 87 / M-82302 (DIN 912 -10,9) The mounting bolts must be ordered separately.

PERFORMANCE CURVES FOR URZS 16 measured at v = 41 mm2/s and T = 323 K With dumping nose HYDRAULIC SCHEME FOR URZS 16 Without dumping nose Orders coded in the way showed below should be forwarded to the manufacturer. Area ratio Cracking pressure Valve poppet without dumping nose with dumping nose Further requirements in clear text (to be agreed with the manufacturer Phosphate ester Series number (10 -19) - installation and connection dimensions

DIMENSIONS FOR COVER ULZS 16 D O, - O-ring 9,2 x 1,8 - 1 piece Wei9ht of ULZS 16 d ~ 1.2 kg Mounting the cover by means of 4 bolts M8 x 50-10.9 PN - 87/M-82302 ( DIN 912-10.9 ). Mounting bolts must be ordered separately. OPERATING CURVES FOR COVER ULZS 16 D

Orders coded as below should be forwarded to the manufacturer. Series number dimensions unchanged Control port Without nozzle = no code Nozzle diameter Further details in clear text (to be agreed with the manufacturer) Mineral oils. Phosphate ester In case of ordering the cover together with the valve, please, quote the codes of the both elements. OVERALL DIMENSIONS FOR COVER ULZS 16 WE

Orders coded as below should be forwarded to the manufacturer Series number dimensions unchanged Control port With nozzle at port With nozzle at port With nozzle at port With nozzle at port Nozzle diameter Further requirements in clear text (to be agreed with the Mineral oils Phosphate ester Electrical connection Plug-in connector with lamp = Z4L without emergency operator =no code with emergency operator =N Control valve version without return spring = O In case of ordering the cover together with the valve, please, quote the codes of the both elements. Example : ULZS 16 WEA /10 - A - 07...

3. COVER ULZS − 16 H OVERALL DIMENSIONS FOR COVER ULZS 16 H O1 − O−ring 9,2 x 1,8 − 1 pcs Weight of ULZS 16 H − approx.1,7 kg DIAGRAMS FOR ULZS 16 H ULZS − 16 H.../...

Orders coded as below should be forwarded to the manufacturer Series number dimensions unchanged Pilot supply Internal pilot suply External pilot suply Control port Without nozzle With nozzle Further requirements in clear text (to be agreed with the Mineral oils Phosphate ester Nozzle diameter In case of ordering the cover together with the valve, please, quote the codes of the both elements. Example : ULZS 16 H1 10/ FX - 07 + URZS 16 - A -10 - E -10