A.O. Smith 970 Series Recirculating System, DETAIL 4 - GAS VALVE, BTH 300A, BTH 400A, Description

RECIRCULATING SYSTEM

		BTH 300A	BTH 400A
Item	Description	970/971	970/971
1	Elbow, 3/4" Female - 3/4" Female	........................................................... 194873	194873
2	Elbow, 3/4" Male - 1" Female	194872	194872
3	Hose, Flexible	194912	194912
4	Nipple, 3/4" - Pipe x 2"	194921-3	194921-3
5	Nipple, 3/4" - Pipe x 4"	194921-2	194921-2
6	Nipple, 3/4" - Pipe x close	194921-1	194921-1
7	Pump, Recirculation	194799	194799
8	Tee, Non-Reducing	194870	194870
9	Tube, Closed End Dip	194924	194924
10	Tube, Inlet	194820	194820
11	Vent, Automatic Air	194830	194830

Standard hardware items may be purchased locally.

DETAIL 4 - GAS VALVE

Item	Description	BTH 300A	BTH 400A
		970/971	970/971
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	192477-7	192477
	Orifice, LP	192477-8	192477-9
8	Orifice holder	192447	192447

Standard hardware items may be purchased locally.

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