... in wall-mounted horizontal way,4.ZSTB-68oC to be installed in sidewall way,5.ZSTP-68oC ... known as concealing type sprinker with a round cover outside which can help to maintain the harmony of its ... surroundings.size:1.DN 15mm, connect thread R1/2, flow coefficient 80, rated W.P ... . 1.2MPa2.DN 20mm, connect thread R3/4, flow coefficient 115,rated W.P. 1.2MPa ...