Designation pilot--operated check valve

Design dual poppet / seat construction

Mounting method modular mounting design (sandwich)

Size ISO 4401 size 03 interface, nominal 6 mm

Weight kg 1,20

Mounting attitude unrestricted, but see symbol plate

Flow direction see symbols

Operating pressure range in P, A, B and T bar ... 350

Cracking pressure (approx.) bar 1,3, see ?p--Q curve

Area ratio 1:6

Flow rate, Qmax l/min 60, see ?p--Q curves

Fluids HL and HLP hydraulic oils to DIN 51 524;

for other fluids, please consult BUCHER

Fluid temperature range _C --25 ... +80

Ambient temperature _C --25 ... +80

Viscosity range mm2/s (cSt) 10 ... 650, recommended 15 ... 250

Minimum fluid cleanliness level 18/14 to ISO 4406 / CETOP RP70H; 8 ... 9 to NAS 1638