18049 1 Little Giant Check Valve Submittal User Manual

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User Manual: Pump 18049 1 Little Giant Check Valve Submittal

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Accessories - Check Valves

Check Valves
CV - 114/112 and CV-SE
Features

CV - 114/112, CV-SE

n

ABS construction

n

Easy slip fit design makes simple installation

n

Durable flapper designs checks back flow of
water and sewer gasses

n

Can be installed in vertical or horizontal line

n

Flexible unions slip over ABS, PVC or copper pipe

n CV-114/112 fits
n

both 1-1/4" and 1-1/2" IPS pipe

CV-SE fits 2" IPS pipe

CV-SE1, CV-SE2 and CV-SE3
Features
CV-SE1, CV-SE2 and CV-SE3

n

Full flow non-clog design

n

Compression end fittings allow quick and easy
installation, no threading of pipe required

n

Suitable for below pit cover installation

n

Can be used as a union connection

CV-114
Features

CV-114

n

Full port valve design

n

Durable PVC construction, 1-1/4" MNPT x
1-1/4" barbed or 1-1/2" slip

n

Flapper opens 100%

Check Valves
CV-114-112
/

ITEM
NO.
599059

MODEL
NO.

IPS
SIZE

CV-114/112 1-1/4" & 1-1/2"

DIM
“A”

DIM
“B”

SOLID
HANDLING

3" SQUARE

7.25

1"

577105

CV-114

1-1/4" MNPT
1-1/4" BARBED
& 1-1/2" SLIP

2.59

3.75

N/A

940021

CV-SE

2"

3" SQUARE

8"

3/4"

940019

CV-SE1

1-1/2"

3-1/4"

7-1/2"

1-1/2"

940022

CV-SE1

2"

4-1/4"

9-3/4"

2"

940023

CV-SE3

3"

5-3/4"

14"

3"

CV-SE

Guidelines for Use of Check Valve in Sewage,
Effluent and Ejector Pump Systems:

1. Valve may be installed horizontally or vertically. However,
when installed in systems handling solids, valve must be
installed horizontally or at a maximum of a 45° angle. This
will guard against any solids lodging on top of valve flapper
and preventing valve from opening on start-up.
2. Valves have flow direction arrows and horizontal and vertical
position markings molded on them. Use horizontal position
markings for all installations from horizontal to vertical to
ensure correct flapper pivot position. (Recommended maximum 45° angle on solids handling applications).

CV-114

3. For submersible pump applications, drill a 3/16" hole in
discharge pipe approximately 1"–2" above the pump discharge
connection to prevent air locking of pump.
4. When check valve is used as a union, connection must be
beyond end of basin cover to make servicing of installation
easier. To use as a union connection, the following axial
movement of discharge pipe must be allowed to remove
discharge pipe from valves:
CV-SE1 — 2-3/4"
CV-SE2 — 3-1/4"
CV-SE3 — 4-1/4"
5. A gate valve should be installed after check valve to allow
servicing and removal of check valve or pipe.
6. All discharge piping should be properly supported to prevent
separation of pipe at valve.
PO Box 12010 • Oklahoma City, OK 73157
Phone: 800.701.7894 • Fax: 800.701.8046
E-mail: customerservice@littlegiant.com

www.LittleGiantPump.com

Form 994355 — 08/2007
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