（181） φD1 H R11/4 90゜ φd （181） φD1 H n-φh φD P.C.D.C 90゜ φd t （91） 11/4 （121.5） Open Closed Open Closed Side view of cock 25 mm (1 inch) FLANGED (Type B) 25 mm (1 inch) THREADED (Type A) 3 DETAIL OF SECTION A (Lid attachment part) Open Closed 90° （X1） H3 （Z） X H1 H2 H φD1 φD P.C.D.C n-M Depth . Air release valve 200 mm: Cover attachment part （570） ( Total length of air release valve ) φD1 （450） H Open Closed 90° P.C.D.C n-M H1 H2 φD1 X φD 12.5° H 75 mm (3 inch) FLANGED 100 mm . 200 mm (4 inch . 8 inch) FLANGED 186 MANUAL ■ 25 mm threaded (Type A) JIS (Unit: mm) mm NOMINAL PRESSURE D1 H d 25 7.5k 10k 16k 200 279 25 ■ 25 mm flanged (Type B) JIS (Unit: mm) 7.5k (Waterworks) 10K (JIS10K), 16K (JIS16K) mm NOMINAL PRESSURE D1 H d D C n-h t D C n-h t 25 7.5k 10k 16k 200 286 25 - - - - 185 150 8-φ19 22 7.5k (Waterworks) 10K (JIS10K),16K (JIS16K) ■ 75mm―200mm 　JIS (Unit: mm) mm NOMINAL PRESSURE D1 C n-M . C n-M . D1 H H1 H2 H3 X Z 75 7.5k 10k 16k 211 - - - 150 8-φ19 - 238 333 103 230 50 197 219 100 238 - - - 175 8-M16 22 260 411 123 288 38 233 250 150 290 - - - 240 8-M20 30 341 596 203 393 70 282 320 200 342 - - - 290 12-M20 30 440 729 203 526 70 322 400 AIR RELEASE VALVE, ISOLATING VALVE APPLICABLE FOR SHALLOW LAYER BURIAL CONNECTION / FLANGED――JIS　THREADED――R