A screw-in, cartridge-style, hydraulic check valve for use as a blocking or load-holding device. The cartridge incorporates a low flow thermal relief valve intended to prevent cylinder damage resulting from temperature-induced pressure intensification.
· Hardened parts for long life and low leakage · Optional bias springs for backpressure application flexibility · Fully guided check assembly · Compact size · Fast closing and seating
Technical Specs
Rated pressure
240 bar (3500 psi)
Formula for thermal expansion
∆ P = 57.7 x ∆ T (where ∆ P is in psi; T is in ° F)
Peak flow
See performance chart
Standard bias springs at crack
4.5 bar
Check ① to ② crack pressure defined
Gauge bar (psi) evident at ① at 16.4 cc/minute (1 cu. in./minute) attained at ②
Cavity
VC10-2 (See technical reference)
Internal leakage
≤ 0.25 mL/min (5 drops/min) @ 240 bar
Fluid
Mineral-based or synthetics with lubricating properties
Viscosity range
7.4 to 420 mm2/s
Temperature range
-54 to 107 ℃ (Polyurethane seals)
-40 to 100 ℃ (Buna N seals)
-26 to 204 ℃ (Fluorocarbon seals)
Degree of fluid contamination
The minimum pollution level is ISO4406 level 20/18/14, and level 17/15/13 is recommended to prolong the service life