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General Bulletin Nn. 4260 <br /> • May 23, 2000 <br /> Page 3 <br /> SPRINKLER <br /> BRANCH LWE TYP� HYDRAULICALLY <br /> MOST REMOTE AREA . SPRINKLER <br /> 1 PIPING <br /> CROSS SPRINKLER <br /> MAIN BRANCH ANSUL LOCKABI.E <br /> .,y�LWETYP � SHUTOFFVALVE <br /> j� 7"PIPE <br /> ' (MINIMUM) <br /> 1a I.-" / WYE <br /> TO OTHER ,.-'� / STRAINER <br /> / / <br /> FLOORS � �� LOW POINT —► / <br /> DRAIN VALVE [ <br /> � CMA�INS �_ 1b : (1"MIN.) � <br /> �a ; `" TO DRAIN <br /> TO DOMESTIC ��R���W 1a <br /> CONTROL SWITCH <br /> VALVE <br /> ta.OPTIONAL CONNECTIONS OUTSIDE HYDRAULICALLY <br /> MOST REMOTE AFEA <br /> 1b.CONNECTION TO CROSS MAIN WITHIN HYDRAULICALLY <br /> MOST REMOTE AREA. <br /> ta CONNECTION TO BRANCH WE WITHIN HYDRAULICALLY PIftANHA. <br /> MOST REMOTE AREA(VERIFY SPRINKLER SYSTEM WATER VAL`✓E <br /> CALCULA710NS). <br /> BACKFLOW FIGURE 1 FIGURE 2 <br /> PREVENTION iooasz3� roo sZ�i <br /> WATER PRESSURE UP TO 100 PSI(6.9 bar)STATIC AT PIRANHA� <br /> PIRANH/4 DEDICATED WATERUNE CONNECTION TO EXISTiNG SPRINKLER SYSTEM PIPING WATER VALVE(NO ADORIONAL BACKFLOW PREVENTION REQUIRED) <br /> = SPRINKLER PIPING � SPRINKLER PIPING �SPRINKIER <br /> PIPING ppUBLE OETECTOR <br /> DOUBLE DETECTOR CHECK(O.D.C.) CHECK(D.D.C_)OR <br /> OR REDUCED PRESSURE ZONE REDUCED PRESSURE <br /> (R.PZ)BACKFLOW PREVENTION(IF PAESSURE ZONE(R.PZ) <br /> URSDICTIOf� �ORITY HAVING PREVENTION(IF <br /> PRESSURE RELIEF RELIEF <br /> � VALVE �—VALVE REQUIRED BY <br /> 7"PIPE �I 1^pIPE(MINIMUM) AUTHORITY HAVING <br /> (MIp41MUM)�,E / JURISDICTION) <br /> LOW POINT % STRAINER PRESSURE / WYE PRESSURE <br /> DRAIN VALVE—► � � REGULATING /' STRAINER REGULATING WYE STRAINER <br /> (1"MIN.) (REDUCING)VALVE � (REDUCING) <br /> 1"PIPE <br /> VALVE (MINIMUM) <br /> TO OFAIN LOW POINT LOW <br /> DRAIN VALVE TO � POINT TO � � <br /> ANSUL (1"MIN.) DRAIN ANSUL DRAIN DRAIN ANSUL <br /> LOCKABLE LOCKABLE VALVE LOCKABLE <br /> SHUTOFF SHUTOFF ����"��N�� SHUTOFF <br /> VALVE VALVE VALVE <br /> PIRANHA. PIRANHM PIRANNA. <br /> WATER VALVE WATcR VALV WATER VALVE <br /> FIGURE 3 FIGURE 4 FIGURE 5 <br /> �aoaszs� �oaszs� �owsz�� <br /> WATER PAESSURE UP TO�100 PSI(6.9 bar)STATIC AT WATER PRESSURE UP TO 100 PSI(6.9 bar)STATIC AT WATER PRESSURE UP TO 100 PSI(6.9 bar)STATIC AT <br /> PIRANHA�WATER VALVE(VYRH ADORIONAL PIRANHAO WATER VALVE(NO ADDITIONAL BACKFLOW PIRANHAOO WATER VALVE(1MTH ADOITIONAL <br /> BACKFLOW PREVENTION,IF REQUIRED) PREVENTION RE�UIRED) BACKFLOW PREVENTION,IF REQUIRED) <br /> LEGEND <br /> ' PRESSURE REGULATING (REDUCING) VALVE <br /> „ DOUBLE DETECTOR CHECK VALVE (D.D.C.) or, REDUCED PRESSURE ZONE (R.P.Z.) BACK- <br /> FLOW PREVENTION <br /> ,' SHUTOFF VALVE <br /> STRAINER; MAY BE INCORPORATED IN PRESSURE REGULATING <br /> (REDUCWG) VALVE <br /> � FLOW SWITCH or, PRESSURE RELIEF VALVE <br />