538572 1 Goulds ST31 Sump Effluent Pump Brochure
: Pump 538572 1 Goulds St31 Sump - Effluent Pump Brochure 538572_1_Goulds ST31 Sump - Effluent Pump Brochure pdf
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ST31
SUBMERSIBLE SUMP/EFFLUENT PUMP
TECHNICAL BROCHURE
BST31
PAGE 2
Wastewater
Goulds Water Technology
MOTOR
• ST31: 1⁄3 HP, 115 V, 60 Hz, single phase, 3000 RPM,
12.0 amps maximum.
• Built-in thermal overload protection with automatic
reset.
• Class B insulation
• Oil filled design
• High strength carbon steel shaft
• Power cord: Quick disconnect 10 foot standard
length, heavy duty 16/3 SJTW with NEMA 5-15 P
three prong grounding plug, 115V.
APPLICATIONS
Specially designed for the following uses:
• Basement draining
• Water transfer
• Dewatering
• Effluent Transfer
SPECIFICATIONS
Pump:
• Discharge size: 11⁄2" NPT
• Capacities: to 50 GPM.
• Maximum head: to 26 feet.
• Temperature: 104°F (40°C) maximum, continuous
when completely submerged.
• Solids handling: 1⁄2" maximum sphere.
• Automatic models include a float switch.
• Manual model available.
• Pumping range: see performance chart or curve
below.
PERFORMANCE RATINGS
ST31
Total Head GPM GPH
(feet of water)
4 50 3,000
10 40 2,340
15 28 1,680
20 15 900
CU
S
¤
Tested to UL 778 and CSA 22.2 108 Standards
By Canadian Standards Association
File #LR38549
FEATURES
Corrosion-resistant construction
Cast iron body
Thermoplastic impeller and cover
Replaceable power cord
Bearings: Upper sleeve and lower heavy duty ball
bearing construction.
Built-In Vent Hole: Prevents air-binding with no
added labor.
Motor is permanently lubricated for extended
service life and is powered for continuous
operation. All ratings are within the working limits
of the motor.
Complete unit is heavy duty, portable and compact.
Mechanical Seal: carbon/ceramic/Buna/
stainless steel.
Stainless steel fasteners and stainless steel pipe
plug.
AGENCY LISTINGS
PAGE 3
Wastewater
Goulds Water Technology
00102030
5
10
15
20
25
FEET
TOTAL DYNAMIC HEAD
CAPACITY
GPM
30
40
m3/h
1 FT
2 GPM
50
METERS
0
5
0510
MODEL: ST31
RPM: 3000
HP: 1/3
ST31
MODEL INFORMATION
Order
No. HP Volts Amps
Minimum
Circuit
Breaker
Phase Float Switch Style Cord
Length
Discharge
Connec-
tion
Mini-
mum
On
Level
Mini-
mum
Off
Level
Mini-
mum
Basin
Diam-
eter
Maxi-
mum
Solids
Size
Shipping
Weight
lbs/kg
ST31AV
1⁄3115 12.0 20 1
Built-In Vertical
10' 11⁄2"
8" 3.5" 11"
1⁄229 /
13.2
ST31A1 Built-In Wide Angle 14" 7" 18"
ST31M Plug / No Switch Manual Manual 11"
ST31P1 Piggyback Wide
Angle 14" 7" 18"
ST31PV Piggyback Vertical 8" 3.5" 11"
Goulds is a registered trademark of Goulds Pumps, Inc. and is used under license.
© 2012 Xylem Inc. BST31 Rev. 1 April 2012
Xylem, Inc.
2881 East Bayard Street Ext., Suite A
Seneca Falls, NY 13148
Phone: (866) 325-4210
Fax: (888) 322-5877
www.xyleminc.com/brands/gouldswatertechnology
DIMENSIONS
(All dimensions are in inches. Do not use for construction purposes.)
9.6
2.2
6.4
12.1
12.0
.6
3.1
11∨2” NPT DISCHARGE
6.4
9.6
2.2
3.1
12.1
12.0
.6
11⁄2" NPT DISCHARGE
VERTICAL FLOAT SWITCH
Pump
Off
Pump
On
4.5"
9"
12.1"
ADDITIONAL STRAINER AVAILABLE AS ACCESSORY
Part No. A2-STST
• Material of construction mineral filled TPO
• Snaps in place over pump suction
• Prevents pea gravel from entering pump
