Standard_Parts_Catalogue

Page 1616 | 3.5 Controlling, Venting, Sealing of Liquids and Gases GN 775 Breather Caps Plastic, with Filter and Double Valve 1 d 1 2 Opening pressure (Tank overpressure) How to order 1 2 GN775-G¾-350 * not availble from stock, requires a minimum order quantity Function and operational criteria of breather caps GN 775 see description of function. In addition, breather caps GN 775 are known for the following properties: a torque limiter is installed in the mechanism which is set to give the optimum torque to ensure a perfect seal on installation, once screwed in position, they can only be removed with a special key, with this vandalism proof function, the breather caps cannot be tampered with or removed by an unauthorised person. The connection between upper part (cap) and lower part (threaded part) conforms to IP protection class 65 → Page 2153. Breather caps are supplied with two keys each. see also... • Breather Caps GN 774 → Page 1620 • Breather Caps GN 764 → Page 1618 Information • Plastic - - Temperature resistant up to 100 °C - - Black - - Upper part (cap) Polyamide (PA) - - Lower part (threaded part) Polyacetal (POM) • Seal Rubber NBR (Perbunan ® ) • Air filter PU-foam (Polyurethane) Filtration 40 µm • Key Plastic, red • Insert profile Stainless steel sheet • Pressure spring Stainless steel • Elastomer Characteristics → Page 2158 • Plastic Characteristics → Page 2158 • RoHS Specification 1 2 d 1 Opening pressure in mbar at tank overpressure Opening pressure in mbar at tank vacuum d 2 d 3 l 1 l 2 l 3 G 3 ⁄ 4 350 700 * 30 36 16 15 5,5 68 M 42 x 2 350 700 * 30 47 32 21 4   74 Original design SFW-VP