Standard_Parts_Catalogue

Page 1620 | 3.5 Controlling, Venting, Sealing of Liquids and Gases GN 774 Breather Caps Plastic, with Filter and Double Valve 1 d 1 2 d 2 3 Opening pressure 4 Type How to order 1 2 3 4 GN774-57-G¾-350-A 4 Type A Without dipstick B With dipstick Function and operational criteria of breather plugs GN 774 see function description. Breather caps are fitted either with a threaded neck or with a bayonet connection and they can also be combined with a filler strainer GN 664 or GN 664.1. The bayonet version is fitted with a chain to avoid losing it. MAX-MIN lines can easily be marked on the two flat sides of the dipstick (see GN 109 → Page 2083) . see also... • Filler Strainer GN 664 / GN 664.1 → Page 1634 / 1636 • Breather Caps GN 775 → Page 1616 • Breather Caps GN 764 → Page 1618 Information • Plastic (Polyamide PA) - - Temperature resistant up to 100 °C - - Upper part (cap) Orange, RAL 2004 - - Lower part (threaded part / bayonet) Black, matte finish • Seal Rubber NBR (Perbunan ® ) • Air filter PU-foam (Polyurethane) - - Filtration 40 µm - - Temperature resistant up to 100 °C • Dipstick Steel, phosphated • Elastomer Characteristics → Page 2158 • Plastic Characteristics → Page 2158 • RoHS Specification • Level markings / Special lengths GN 109 → Page 2083 On request * not availble from stock, requires a minimum order quantity 1 2 3 d 1 d 2 Opening pressure in mbar d 3 d 4 d 5 l 1 l 2 l 3 l 4 l 5 l 6 Thread Bayonet Type A Type B 57 G 3 ⁄ 4 - - 350 700 * 35 16 56 13 6 48 - - - 70 G 3 ⁄ 4 G 3 ⁄ 4 - 350 700 * 35 16 68 15 6 63 - - 188 70 G 1 1 ⁄ 4 G 1 1 ⁄ 4 - 350 700 * - 25 68 17 - 59 - - 195 70 G 2 - - 350 700 * - 25 68 17 - 59 - - - 70 - - BA 39 350 700 * - 25 68 - - - 14 56 195 Original design SFW.