123 Stainless Steel Non-Return Valves Function Fittings 01 // Fittings Level 3 reduit / EN_Level 4 sans numero Soft Start Fittings Component Materials Technical Characteristics To prevent the risk of industrial accidents, the pressure increase in the downstream circuit allows soft start of the installation. Ø metric: 8 to 10 mm Advantages Protection of equipment and personnel: • Prevents the risk of damage after any stoppage which requires the system to be vented • Returns the control valve to its initial position in total safety • Adjustment of the pressurisation speed Mounted on FRL: • 7860: yellow identification washer • Protection for the whole system • Simultaneous pressurisation speed of the whole system Mounted on Control Valve: • 7870: black identification washer • Protection of individual circuits • Mounted on the control valve, it optimises the pressurisation speed of a specific cylinder • Compatible Fluids: Compressed air • Working Pressure: 3 to 10 bar • Working Temperature: -15°C to +60°C Threads daN.m Max. Tightening Torques G1/4 1.3 G3/8 1.5 G1/2 1.8 Model Flow at 6 bar Kv Flow Characteristics 7860 08 13 1500 Nl/min 0.80 7860 10 13 2100 Nl/min 1.20 7860 10 17 2200 Nl/min 1.30 7870 08 13 1500 Nl/min 0.80 7870 10 13 2000 Nl/min 1.15 7870 10 17 2000 Nl/min 1.15 Body: technical polymer or nickel-plated brass Internal seal: NBR Screw: nickel-plated brass Washer: technical polymer Regulations • REACH • RoHS • PED Silicone-free Adjustment by Allen key Gold-coloured identification washer Filling screw Spring Adjustable needle Valve From FRL From FRL Adjustment by Allen key Black identification washer Filling screw Spring Adjustable needle Valve To cylinder To cylinder Control Valve FRL FRL Control Valve Filter, Regulator, Lubricator Control Valve Operation Adjusting the screw to regulate the flow of air optimises the time taken to pressurise depending on the air volume to be refilled and the system requirements. To adjust: – immobilise the piston using a spanner – adjust the screw with an Allen key • 1.5 mm key for 8 mm diameter • 2.5 mm key for 10 and 12 mm diameter Max. tightening torque: 0.1 daN.m When the downstream pressure reaches 2/3 of the supply pressure, full flow is automatically established Open-ended spanner Adjustment of the Filling Screw Cylinder Pressure Cycle P P1 P1 = 2/3P 0 Pressure Circuit t = System without soft start fitting Exhaust back pressure Gradual pressure increase T = System with soft start fitting Time Full flow Vent
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