Description Size 16 Component series 5X Maximum operating pressure 315 bar Maximum flow 300 l/min Features Sandwich plate valve for use in vertical stackings Porting pattern according to ISO 4401-07-07-0-05 For the leakage-free blocking of one or two actuator ports, optional Various cracking pressures With pre-opening Check valve installation sets available individually Corrosion-protected design Product description The isolator valve type Z2S is a releasable check valve in sandwich plate design. It is used for the leakage-free blocking of one or two actuator ports, also in case of longer standstill times. In direction A① to A② or B① to B②, there is a free flow; in the opposite direction, the flow is blocked. If, for example, there is a flow through the valve in direction A① to A②, the control spool (1) is moved in the direction of the B side, opens the ball seat valve (2) and then pushes the poppet (3) off its seat. Hydraulic fluid can now flow from B➁ to B➀. In order to allow the ball seat valve (2) to be safely closed, the control spool (1) must be hydraulically unloaded (see circuit example). Pre-opening Due to the pre-opening, there is a damped decompression of the pressurized liquid. Thus, possible switching shocks are avoided. The two-stage set-up with an increased control open ratio means even low pilot pressure can be unloaded securely. Type Z2S 16 ‒… Type Z2S 16 A… Type Z2S 16 A…SO40 Type Z2S 16 A…SO60 Circuit example, schematic 1 Control spool, area A 2 2 Ball, area A 3 3 Poppet, area A 1 4 Stop 5 Control spool, area A 4 ① component side ② plate side Type code 01 02 03 04 05 06 07 08 09 Z2S 16 – 5X / * 01 Check valve, Sandwich plate design Z2S 02 Size 16 16 Leakage-free blocking 03 In channel A and B – In channel A A In channel B B Cracking pressure 04 3 bar 1 5 bar 2 7,5 bar 3 10 bar 4 05 Component series 50 ... 59 (50 ... 59: unchanged technical data and pin assignment) 5X Seal material 06 NBR seals no code FKM seals V Observe compatibility of seals with hydraulic fluid used. (Other seals upon request) Corrosion resistance (outside; thick film passivated according to DIN 50979 Fe//Zn8//Cn//T0) 07 None (valve housing primed) no code Improved corrosion protection (240 h salt spray test according to EN ISO 9227) J3 Special version 08 Standard no code Control open by external port G1/4 (only version "A" and "B") SO40 Control spool unloaded to port T SO60 09 Further details in the plain text * Technical data (For applications outside these values, please consult us!) general Size 16 Weight kg 6.5 Installation position any Ambient temperature range NBR seals °C -30 … +80 FKM seals °C -20 … +80 MTTFD values according to EN ISO 13849 Years 150 1) 1) For further details, see data sheet 08012 hydraulic Size 16 Maximum operating pressure bar 315 Cracking pressure (in free direction) See characteristic curves Maximum flow l/min 300 Direction of flow see symbols Hydraulic fluid see table "Hydraulic fluid" Hydraulic fluid temperature range (at the
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