with spring return 2 Design, function and technical data Spool valve with spring return. All ports are interchangeable. Valves of this series are available for use with vacuum (– 0.95 … 12 bar / –14 … 175 psi). Order number changes in HF-18-310-Q and HF-18-510-Q. Valves of this series are available in explosion proof design in accordance with 94/9/EG (ATEX). For further details see chapter 13 of this catalogue. Order number Connection Nominal size Flow rate G1/8 G1/4 G1/2 G1/8 G1/4 G1/2 6 mm 9 mm 14 mm 6 mm 9 mm 14 mm 750 Nl/min 1580 Nl/min 3300 Nl/min 750 Nl/min 1580 Nl/min 3300 Nl/min (0.762 Cv) (1.606 Cv) (3.354 Cv) (0.762 Cv) (1.606 Cv) (3.354 Cv) Pressure range 0 . . . 12 bar (0 … 175 psi) Actuating force at 6 bar 13 N 20 N 32 N 13 N 20 N 32 N Temperature range – 10 hC . . . + 70 hC (+ 14 °F … + 158 °F) Materials Body: Al (anodized), Inner parts: Al, stainless steel, Lever: stainless steel, Seals: NBR and POM Medium Compressed air in accordance with ISO 8573-1: 2001, Class 7 4 – and free of aggressive additives Weight 0.266 kg (0.586 lb.) 0.480 kg (1.058 lbs.) 1.210 kg (2.667 lbs.) 0.310 kg (0.683 lb.) 0.560 kg (1.234 lbs.) 1.430 kg (3.152 lbs.) Order number 5/3-Wege, center position closed 5/3-Wege, center position exhausted Connection Nominal size Flow rate G1/8 G1/4 G1/2 G1/8 G1/4 G1/2 6 mm 9 mm 14 mm 6 mm 9 mm 14 mm 780 Nl/min 1800 Nl/min 3300 Nl/min 780 Nl/min 1800 Nl/min 3300 Nl/min (0.793 Cv) (1.829 Cv) (3.354 Cv) (0.793 Cv) (1.829 Cv) (3.354 Cv) Pressure range 0 . . . 12 bar (0 … 175 psi) Actuating force at 6 bar 20 N 25 N 36 N 20 N 25 N 36 N Temperature range – 10 hC . . . + 70 hC (+ 14 °F … + 158 °F) Materials Body: Al, Lever: stainless steel; Bellows: Moleritf; Screws: steel zinc-plated/nickel-plated Inner parts: Al, stainless steel, brass; Seals: NBR, PU (at HF-18 and HF-14), NBR, POM (at HF-12) Medium Compressed air in accordance with ISO 8573-1: 2001, Class 7 4 – and free of aggressive additives Weight 0.320 kg (0.719 lb.) 0.580 kg (1.278 lbs.) 1.430 kg (3.152 lbs.) 0.320 kg (0.719 lb.) 0.580 kg (1.278 lbs.) 1.430 kg (3.152 lbs.) HF-18-310, HF-18-310-Q 1 = pressure inlet 2 = outlet 3 = exhaust Further dimensions see page 2.103.

Hand lever valves with spring return or detent