Bosch Standard Valves Hydraulic Check / Non-Return Valves Model Z1S Check Control Valves

Hydraulics Application: Check valves of sandwich plate design

Key features:

• Sizes 6 and 10
• Porting pattern to DIN 24340 form A and ISO 4401
• Various isolating functions
• Various opening pressures
• Size 6 (component series 4X):
  • Check valve made of carbon fiber reinforced plastic
  • Tightness improved as compared with previous version with metal seal
  • Excellent compatibility with various hydraulic fluids
• Size 10 (component series 3X): optionally with
  • Metal seal (“–”)
  • Soft seal (“W4”) (please note restrictions with regard to flow volume!)

RE 21 534 (Size 6)
RE 21 537 (Size 10)
Check valve, Z1S (Size 6)
Check valve, Z1S (Size 10) 

Write a review

Your Name:


Your Review: Note: HTML is not translated!

Rating: Bad           Good

Enter the code in the box below: