Atos Valve DPHA-1631/2/NPT/DWP 24DC 33

3
MAIN CHARACTERISTICS, SEALS AND HYDRAULIC FLUID- for other fluids not included in below table, consult our techniccal office
Any position for all valves except for type – 70 (without springs) that rmust be installed with hori
Assembly position / location
zontal axis if operated by impulses.
Subplate surface finishing
Roughness index Ra 0,4 – flatness ratio 0,01/100 (ISO 1101)
MTTFd values according to EN ISO 13849
75 years, for further details see technical table P007
Ambient temperature
Standard execution = -30°C + +70°C; /PE option = -20°C + +770°C; /BT option = -40°C + +70°C
NBR seals (standard) = -20°C + +60°C, with HFC hydraulic fluids = 20°C++50°C
FKM seals (/PE option)= -20°C + +80°C
Seals, recommended fluid temperature
HNBR seals (/BT option)= -40°C + +60°C, with HFC hydraulic fluids =40°C + +50°C
Recommended viscosity
15+100 mm?/s – max allowed range 2.8 + 500 mm?/s
Fluid contamination class
ISO 4406 class 21/19/16 NAS 1638 class 10, in line filters of 25 um (B25 ≥75 recommended)
Hydraulic fluid
Suitable seals type
Classification
Ref. Standard
DIN 51524
NBR, FKM, HNBR
HL, HLP, ALPD, HVLP, HVLPD
Mineral oils
FKM
Flame resistant without water
HFDU, HFDR
ISO 12922
NBR. HNBR
HFC
Flame resistant with water
Flow direction
As shown in the symbols of table 2
P, A, B, X = 350 bar (for pilot pressure see also option /L9 at sectio国
T = 250 bar for external drain (standard)
Operating pressure
T and Y with internal drain (option /D) = 120 bar DPHI; 210 bar DPHI(DC); 160 bar DPHE (AC)
Ports Y and L (if required): 0 bar
Minimum pilot pressure for correct operation is 8 bar
Rated flow
See diagrams Q/Ap at section 6
DPH*-1: 160 Vmin; DPH*-2: 300 Vmin; DPH*-4: 700 Vmin; DPH*-6: 1000 Vmin
Maximum flow
(see rated flow at section 6 and operating limits at section 7