Dimensions Table

Dia. Plate	B.C.	Cover Opening	No. Bolt Holes	Dia. Holes
14	13	12	3	15/32
20	19	18	4	15/32

Dimensions Table

B Pit Depth	C Pump Length
2'-0"	22"
2'-6"	27"
3'-0"	33"
3'-6"	39"
4'-0"	45"
4'-6"	50"
5'-0"	56"
5'-6"	62"
6'-0"	68"
6'-6"	74"
7'-0"	80"
7'-6"	86"
8'-0"	92"
8'-6"	98"
9'-0"	104"
9'-6"	110"
10'-0"	116"
10'-6"	122"
11'.-0"	128"
11'-6"	134"
12'-0"	140"

Dimensions Table

Sump Size Determined by Pump capacity and Depth of Sump Inlet	A Min. Dia. For Single Unit	A Min. Dia. For Duplex Unit
15 GPM	18	30
30 GPM	24	36
50 GPM	30	42
75 GPM	30	42
100 GPM	36	42
125 GPM	36	42

***NOTE: Sump should be approx. 3 feet deeper than inlet

PUMP SIZING DATA

PUMP CAPACITY

Sump Pump capacity can be selected from the following table, depending on the type of soil in which the building foundation is located. The G.P.M. ratings apply to a single pump unit and to each pump of a duplex set.

Sq. Ft.	of	Floor Space		G.P.M. (Clay Soil)	G.P.M. (Sandy Soil)

	to	2,000	-	15	50
2,000	to	4,000	-	30	75
4,000	to	6,000	-	50	100
6,000	to	10,000	-	75	125
10,000	to	15,000	-	100	150
15,000	to	20,000	-	125	200
20,000	to	30,000	-	150	250
30,000	to	40,000	-	200	300

If basement floor is more than 3 feet below sewer level, add 10% additional pump capacity for each foot in excess of 3 feet. If building is located within 1000 feet of river or lake, add 20% additional pump capacity.

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PUMP DISCHARGE HEAD

The discharge head for a sump pumpinstallation consists of the following elements:

STATIC HEAD: The difference in elevation between the lowest water level in the sump pit, and the maximum height of the discharge line.

FRICTION: Loss of head in the discharge line, including valves and other fittings.

BACK PRESSURE: Proper allowance must be made for back pressure in sewer line, if existing.

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EXAMPLE

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Sump pit 5 feet in depth to be set in ground, with top flush with finnished floor. Basement floor 10 feet highest pointof discharge line. Sump pump capacity 50 G.P.M. Size of discharge line is 3 inches.

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Static Head ............................................................. *14 ft.

Friction Head: discharge line ...................................... 2 ft.

valves and other fittings .............................................. 2 ft.

Back Pressure: .......................................................... 5 ft.

Total Dynamic Head ................................................... 23 ft.

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* Lowest water level estimated to be 1 ft. above bottom of sump pit.

The above drawings of pit and basin cover plates for Type VSP Sump Pumps show standard arrangements of Simplex and Duplex Units for both circular and square plates. Square plates are usually furnished for concrete pits, while circular plates are normally furnished for cylindrical cast iron and steel basins.

Fabricated steel plates are furnished as standard. Steel plates of rectangular and special shapes can be supplied, when specified. All cover plates are treated with a corrosion resistant coating.

Type PF-1: furnished as standard for square and rectangular pits. Permits frame and cover to be installed flush with finished floor. Has bar support for cover.

Type PF-2: construction same as PF-1 except with angle iron support for cover.

Type PF-3: furnished as standard for round pits. Frame supports cover and should be recessed into concrete so that cover is flush with finished floor.

Type PF-4: construction same as PF-3 except with filler strip. Frames and covers are treated with a corrosion resistant coating, and are available in non standard shapes and sizes, sectional construction, and galvanized or checkered steel.