115 Function Fittings 01 // Fittings Level 3 reduit / EN_Level 4 sans numero Metal Quick Exhaust Valves Metal Quick Exhaust Valves Component Materials Technical Characteristics This range of metal quick exhaust valves is offered in nickel-plated brass, aluminium and stainless steel. The exhaust into the atmosphere accelerates the return speed of the cylinder rod. • Compatible Fluids: Compressed air • Working Pressure: 7970: 0.7 to 10 bar 7971 and 7899: 2 to 10 bar • Working Temperature: 7970: -20°C to +70°C 7971: -10°C to +70°C 7899: Threads G1/8 and G1/4: -10°C to +120°C Threads G3/8 to G1: -20°C to +80°C Regulations • REACH • RoHS • PED Advantages • Cycle time reduction: increased return speed • Exhaust silencer integrated and 360° orientation available on some versions Silicone-free Body: Model 7970: nickel-plated brass Model 7971: anodised aluminium Model 7899: stainless steel Integrated silencer: stainless steel (model 7971) Lip seals: 7970-7971: polyurethane elastomer 7899: - G1/8 and G1/4 FKM - G3/8 to G1, polyurethane A B A B Control valve Control valve Free exhaust Cylinder Cylinder Installation Diagram Mounted on Cylinder Operation 7970 Elbow Quick Exhaust Valve, Female BSPP and Metric Thread Nickel-plated brass H1 H E C F F F L C E F H H1 L Kg M5x0.8 7970 19 19 5.0 10.0 24.8 15.6 4.0 0.029 G1/8 7970 10 10 7.5 14.0 42.0 28.0 8.0 0.084 G1/4 7970 13 13 11.0 19.0 53.0 34.5 11.0 0.150 G3/8 7970 17 17 12.0 21.0 58.0 36.0 12.0 0.153 G1/2 7970 21 21 14.0 26.0 71.0 44.0 14.0 0.312 G3/4 7970 27 27 16.0 32.0 86.0 52.0 18.0 0.449 G1 7970 34 34 19.0 38.0 94.0 56.0 19.0 0.528 7971 Elbow Quick Exhaust Valve, Male BSPT/ Female BSPP Thread Treated aluminium C C1 F H Kg G1/8 R1/8 7971 10 10 18.0 32.5.00.013 G1/4 R1/4 7971 13 13 18.0 35.5.00.018 G3/8 R3/8 7971 17 17 27.0 45.0 0.048 G1/2 R1/2 7971 21 21 34.0 52.0 0.086 Noise level: 7971 10 10: 70 dBa 7971 13 13: 70 dBa 7971 17 17: 72 dBa 7971 21 21: 88 dBa
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