Catch Basin Traps

Cast iron catch basin traps are used extensively on sewer catch basins or manholes to prevent clogging on sanitary systems. They provide a waterseal against escaping gases. Traps with drop type catch basins provide effective means of keeping pipe lines entirely clean. The drop portion of inlet retains all solid material, and the trap prevents all floating debris from entering outlet pipe.

R-3700+

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R-3700

Catch Basin Trap

R-3700 Catch Basin Trap

Pipe size to 12".
Setting method — 4 anchor bolts.
Install on flat wall only.

R-3701 Series+

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R-3701 Series

Catch Basin Trap

R-3701 Series Catch Basin Trap

Cast iron handle.
Locate bottom of trap minimum 6" below flow line.
Install on flat wall only.

Catalog No.	A	B	Pipe Size	Setting Method
R-3701-6	16	12	to 6	on 2 hooks
R-3701-8	18	12	8	on 2 hooks
R-3701-10	20	12	10	on 2 hooks
R-3701-12	22	16	12	on 2 hooks
R-3701-15	25	19	15	on 2 hooks
R-3701-18	28	22	18	on 2 hooks

R-3703 Series+

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R-3703 Series

Catch Basin Trap

R-3703 Series Catch Basin Trap

Cast in concrete wall only.

Catalog No.	A	B	Pipe Size	Setting Method
R-3703-12	19	8 1/2	to 12	in wall
R-3703-15	22	11	15	in wall

R-3704+

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R-3704

Catch Basin Trap

R-3704 Catch Basin Trap

Note vent holes.
Pipe size to 12”.

R-3705 Series+

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R-3705 Series

Catch Basin Trap

R-3705 Series Catch Basin Trap

Cast or grouted in manhole wall. Pipe bell is not the structural support.
Specify whether gas sealed cleanout cover is required. Will be furnished plain if not requested.

Catalog No.	A	B	C	D	E	F	G	H	J	K	L
R-3705-4	23 1/2	10	22	4	5 1/4	3	9	2	6	1 1/2	4 11/16
R-3705-6	25 3/4	9 1/4	24	6	7 1/2	4	11	2 1/2	8	1	4 13/16
R-3705-8	28	6 1/2	26	8	9 1/2	5	13	3	11	1 3/4	4 5/8
R-3705-10	28 1/2	5 1/2	26	10	11 1/2	6	16	3 1/2	13	2	-
R-3705-12	31 1/4	6	28 5/8	12	13 5/8	8	18	4	14	2	6
R-3705-15	34	6	31 1/2	15	16 5/8	8	21 1/4	4	16	2	5 5/8