Aichi, Japan Aihitokei regulator, regulator, zero pressure equalization valve or valves, valves commonly used models: A10Z-1, A13Z-1, A20Z-1, A25Z-2, A40Z-2 spot for Aichi zero-pressure valve, pressure regulator Aichi, Aichi valve; working principle and structure: ⑴ zero pressure valve with thin-film type reverse offset weight regulator spring designed to control the secondary side of the atmospheric pressure. ⑵ inlet through the ambient air pressure, the pressure control valve to the secondary side pressure is equal to atmospheric pressure and where the environmental equipment. ⑶ to the secondary side pressure at a stable pressure changes when the side, using a balanced film design. With adjustable pressure valve. AZ series of zero-pressure valve models: ★ ordinary type: A8Z-1 / A10Z-1 / A13Z-1 / A20Z-1 / A25Z-1 / A30Z-1 / A40Z-1 / A50Z-1 zero-pressure valve, the whole pressure is ; ★ High: A20Z-2 / A25Z-2 / A30Z-2 / A40Z-2 / A50-2 zero-pressure valves, valves; ★ large-capacity type: A40Z-11 / A50Z-11 / A75Z-11 zero pressure valve, the whole pressure valve. Function selection: (i) A8Z ~ A50Z-1 type is the ordinary type; (ii) type A20Z ~ A50Z-2 is a high-performance model; (iii) A40Z ~ A75Z-11-type large-capacity type ● zero-pressure valve and a pressure change measured flow rate does not change relations, the gas pressure of the secondary measured value is maintained at a value of about atmospheric pressure. ● common type (type 1), high-performance type (type 2), a large-capacity type (type 11) to choose from many types of aircraft. ● Regulatory outstanding, it can be used as safety valve. ● safety valve works: Under zero pressure valve operating mode, when the gas pressure exceeds the set pressure, the regulator spring release of gas pressure drop. Capacity choice: type capacity factor (K) differential pressure (P1-P2) kPa. 0.5 1 2.5 5,101,520. Type A8Z-1 1.7 2.5 3 3 3. A10Z-1 2.8 4555 type. Type A13Z-1 0.56 4 6 9 13 18. A20Z-1 type 0.88 691,420,283,540. A25.30Z-1 type 1.32 9,132,130,425,260. Type A40Z-1 1.54 11 16 25 35 49 60 70. Type A50Z-1 4.43 31 45 70 100 141 172 199. Type A20Z-2 0.85 6 9 13 19 27 33 38. Type A25.30Z-2 1.54 11 16 25 35 49 60 70. Type A40Z-2 1.85 13 19 30 42 59 73 84. A50-2 type 5.31 385,385,119,169,207 239 A40Z-11 type 6.44 4,665,102,119,169,207,239. A50Z-11 type 9.90 70 100,157,223,315,385 445 A75Z-11 type 22.9 163,231,365,516,730 895 1033.