Hydrastore power unit

Atos Check Valve Module

Complete Check Valve Module data, part of the Atos Directional Valves & Modules range at Hydrastore

 illustration 1

HR and KR are check valves available as direct or pilot operated models.

Optional versions with decompression are available on request for some models of KR.

HR-0 = size 06, flow up to 60 I/min, pressure up to 350 bar.

Valves are designed to operate in hydraulic systems, with hydraulic mineral oil synthetic fluid having similar lubricating characteristics.

Ordering Chart

Part noSymbolDescriptionMax flowMax pressure
HR-002 HR-002  symbolCETOP 03 Check Valve Module50350
HR-003 HR-003  symbolCETOP 03 Check Valve Module50350
HR-004 HR-004  symbolCETOP 03 Check Valve Module50350
HR-011 HR-011  symbolCETOP 03 Check Valve Module50350
HR-016 HR-016  symbolCETOP 03 Check Valve Module50350
HR-012 HR-012   symbolCETOP 03 PO Check Valve Module50350
HR-013 HR-013   symbolCETOP 03 PO Check Valve Module50350
HR-014 HR-014   symbolCETOP 03 PO Check Valve Module50350
KR-002 KR-002  symbolCETOP 05 Check Valve Module100 350
KR-003 KR-003  symbolCETOP 05 Check Valve Module100 350
KR-004 KR-004  symbolCETOP 05 Check Valve Module100 350
KR-011 KR-011  symbolCETOP 05 Check Valve Module100 350
KR-016 KR-016  symbolCETOP 05 Check Valve Module100 350
KR-012 KR-012  symbolCETOP 05 PO Check Valve Module100 350
KR-013 KR-013  symbolCETOP 05 PO Check Valve Module100 350
KR-014 KR-014  symbolCETOP 05 PO Check Valve Module100 350

3 MAIN CHARACTERISTICS, SEALS and HYDRAULIC FLUID - for other fluids not included in below table, consult our technical office

Assembly position / location
Any position
Subplate surface finishing
Roughness index Ra 0,4 - flatness ratio 0,01/100 (ISO 1101)
MTTFd values according to EN ISO 13849
150 years, for further details see technical table P007
Ambient temperature
Standard execution = -30°C ÷ +70°C
/PE option = -20°C ÷ +70°C
/BT option = -40°C ÷ +70°C
Seals, recommended fluid temperature
NBR seals (standard) = -20°C ÷ +60°C, with HFC hydraulic fluids = -20°C ÷ +50°C
FKM seals (/PE option)= -20°C ÷ +80°C
HNBR seals (/BT option)= -40°C ÷ +60°C, with HFC hydraulic fluids = -40°C ÷ +50°C
Recommended viscosity
15÷100 mm2/s - max allowed range 2.8 ÷ 500 mm2/s
Fluid contamination class
ISO 4406 class 21/19/16 NAS 1638 class 10, in line filters of 25 µm (β25 ≥75 recommended)
Hydraulic fluidSuitable seals typeClassificationRef. Standard
Mineral oilsNBR, FKM, HNBRHL, HLP, HLPD, HVLP, HVLPDDIN 51524
Flame resistant without waterFKMHFDU, HFDRISO 12922
Flame resistant with waterNBR, HNBRHFC

4 DIAGRAMS OF HR-0 based on mineral oil ISO VG 46 at 50°C

Flow through check valve:

  1. AÆ A1; BÆ B1 of HR-012, HR-013, HR-014
  2. A1Æ A; B1Æ B of HR-012, HR-013, HR-014
  3. HR-011, HR-016
, section 4, illustration 1, section 4, illustration 2

5 DIAGRAMS OF KR-0 based on mineral oil ISO VG 46 at 50°C

Flow through check valve:

  1. AÆ A1; BÆ B1 of KR-012, KR-013, KR-014
  2. A1Æ A; B1Æ B of KR-012, KR-013, KR-014
  3. KR-011, KR-016
, section 5, illustration 1, section 5, illustration 2