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DETAIL 4 - GAS VALVE
BTH 300A BTH 400A
Item Description 974/975 974/975
1 Pump, Recirculation ............................................................................... 196915 ................196915
2 Elbow, 3/4" Male - 1" Female ................................................................. 194872 ................ 194872
3 Di-Electric Union..................................................................................... 196941 ................196941
4 Vent, Automatic Air................................................................................. 194830 ................ 194830
5 Tube, Inlet .............................................................................................. 194820 ................194820
6 Tube, Closed End Dip ............................................................................ 194924 ................ 194924
RECIRCULATING SYSTEM
BTH 300A BTH 400A
Item Description 974/975 974/975
1 Nipple, 3/4" - Pipe...................................... 85040-18 ...... 85040-18
2 Nipple, 1/8" - Pipe...................................... 192948-2 ...... 192948-2
3 Pipe, Union ...................................................95515 ............ 95515
4 Switch, Low Gas Pressure ........................ 191149-6 ...... 191149-6
LP Gas .................................................... 191149-4 ...... 191149-4
5 Tee, Non-Reducing ......................................40119 ............ 40119
6 Valve, NAT Gas......................................... 194536-5 ...... 194536-5
Valve, LP Gas ........................................... 194536-6 ...... 194536-6
7 Orifice, NAT............................................. 192477-268 .. 192477-304
Orifice, LP ............................................... 192477-185 .. 192477-221
8 Orifice holder ...............................................192447 .......... 192447
Standard hardware items may be purchased locally.