Дроссельный обратный клапан Z2FS 22

Description Size 25 Component series 3X Maximum operating pressure 350 bar Maximum flow 360 l/min Features Sandwich plate valve Porting pattern according to ISO 4401-08-08-0-05 For limiting the main or pilot flow of two consumer ports Adjustment type: Spindle with hexagon socket For supply or discharge throttling Corrosion-protected design Product description The valve type Z2FS is a throttle check valve in sandwich plate design. It is used for the flow limitation of one or two actuator ports. Two symmetrically arranged throttle check valves limit flows (by adjustable throttle spools) in one direction and allow free return flow in the opposite direction. In case of supply throttling, the hydraulic fluid is directed through channel A➀ via throttling point (1) to actuator A➁. The throttle spool (2.1) can be axially adjusted via the spindle (3) for adjustment of the throttling point (1). Simultaneously, the hydraulic fluid in channel A➀ is directed via the bore (4) to the piston side (5). The active pressure and the spring force retain the throttle spool (2.1) in throttle position. The hydraulic fluid return flow from actuator B➁ displaces the throttle spool (2.2) and enables the unobstructed flow as check valve. Depending on the version ("S" or "S2"), the throttling effect may occur in supply or discharge. Flow limitation For actuator velocity adjustment, the throttle check valve is installed between the directional valve and the subplate. Supply throttling ① component side ② plate side Type code 01 02 03 04 05 06 07 08 09 Z2FS 22 8 – 3X / * 01 Throttle check valve, sandwich plate design Z2FS 02 Size 25 22 03 Throttle check valve side A and B – Throttle check valve side A A Throttle check valve side B B Adjustment type 04 Spindle with internal hexagon 8 05 Component series 30 ... 39 (30 ... 39: unchanged installation and connection dimensions) 3X 06 Supply throttling S Discharge throttling S2 Corrosion resistance (outside) 07 None (valve housing primed) no code Improved corrosion protection (240 h salt spray test according to EN ISO 9227) J3 Seal material 08 NBR seals no code FKM seals V Observe compatibility of seals with hydraulic fluid used. (Other seals upon request) 09 Further details in the plain text * Technical data general Size 25 Weight (approx.) kg 8 Installation position any Ambient temperature range NBR seals °C -30 … +50 FKM seals °C -20 … +50 hydraulic Size 25 Maximum operating pressure bar 350 Maximum flow l/min 360 Hydraulic fluid see table Hydraulic fluid temperature range NBR seals °C -30 … +80 FKM seals °C -20 … +50 Viscosity range mm²/s 2.8 … 380 Maximum admissible degree of contamination of the hydraulic fluid, cleanliness class according to ISO 4406 (c) 1) Class 20/18/15 1) The cleanliness classes specified for the components must be adhered to in hydraulic systems. Effective filtration prevents faults and simultaneously increases the life cycle of the components. For the selection of the filters, see www.boschrexroth.com/fil