Lee Co. (The) 558 Series Press-In Flow Control Valve

The 5.5mm Press-in Flow Control Valves are, functionally, an orifice in parallel with a check valve, all in one 5.5mm diameter, cartridge-style package. These valves are designed for installation into plastic housings and fittings or soft tubing. Their unique barbed design provides easy “press-in” installation ensuring retention and prevents any by-pass leakage around the valve. The valves are all stainless steel construction providing compatibility with a wide range of fluids and gases and contain a high-quality metal to metal seat for highly repeatable cracking pressures and long life. All valves are 100% flow tested for consistent batch to batch performance. Features Cracking Pressure: 40 ± 30 kPa (6 ± 4.4 psid) 100% Flow Tested Metered Flow Lohm Rate Tolerance: ±15% Free Flow Lohm Rate: 250 Lohms Combines Hydraulic Functions Simplifying Manifold Design Unique Barbed Design for Installation into Plastic