Hydrastore power unit

Atos Flow Control Module

Complete Flow Control Module data, part of the Atos Directional Valves & Modules range at Hydrastore

 illustration 1

HQ, KQ are flow throttling valves, not compensated, and with check valves to allow free flow in the opposite direction. The flow adjustment is done by turning the setting screw in the normal model. Optional versions with graduate micrometer knob are available on request. Clockwise rotation increases the throttling (passage reduced).

Valve size and max flow:

Mounting surface:

Max Pressure:

Ordering Chart

Part noSymbolDescriptionMax flowMax pressure
HQ-012HQ-012 symbolCETOP 03 Flow Control module50350
HQ-013HQ-013 symbolCETOP 03 Flow Control module50350
HQ-014HQ-014 symbolCETOP 03 Flow Control module50350
HQ-022HQ-022 symbolCETOP 03 Flow Control module50350
HQ-023HQ-023 symbolCETOP 03 Flow Control module50350
HQ-024HQ-024 symbolCETOP 03 Flow Control module50350
KQ-012KQ-012 symbolCETOP 05 Flow Control module100350
KQ-013KQ-013 symbolCETOP 05 Flow Control module100350
KQ-014KQ-014 symbolCETOP 05 Flow Control module100350
KQ-022KQ-022 symbolCETOP 05 Flow Control module100350
KQ-023KQ-023 symbolCETOP 05 Flow Control module100350
KQ-024KQ-024 symbolCETOP 05 Flow Control module100350

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 HQ-0 based on mineral oil ISO VG 46 at 50°C

  1. Regulation diagram at Δp 10 bar (1.1 = option /U)
  2. Regulation diagram at Δp 30 bar (2.1 = option /U)
  3. Regulation diagram at Δp 50 bar (3.1 = option /U)
  4. Q/Δp diagram for free flow through the non-return valve
, section 4, illustration 1, section 4, illustration 2, section 4, illustration 3

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

  1. Regulation diagram at Δp 10 bar
  2. Regulation diagram at Δp 30 bar
  3. Regulation diagram at Δp 50 bar
  4. Q/Δp diagram for free flow through the non-return valve
, section 5, illustration 1, section 5, illustration 2