What is the hose outlet size? Title says 3/4", description says 1-1/8", comments say both...

The 500 and 750 use 3/4 and the 1100 uses 1-1/8 inch.

Do these bilge pumps run for a period of time after all water is pumped from bildge?

This pump does NOT continue to run for a period of time. As soon as the float switch drops (water falls below the thresh-hold necessary to keep the float switch raised) the pump stops.

the sahara has two versions of the auto pump 1100? 1100 and S1100, why is the S1100 more expensive?

It is my understanding that while the S1100 is indeed a model, one of Attwood’s more powerful bilge pumps, the 1100 refers to that models GPH ( gallons per hour). I am unable to locate an 1100 model. Hope this helps.

The model advertised is S1100 but pictured is S750. Which pump is it?

The S1100 is 1100 GPM. Mine has been in service for about 3 years with no problems. The only negative is that the water level has to get about halh way up the pump before the internal float switchs on the pump.

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Attwood 4511-7 Sahara S1100 Automatic Bilge Pump, 1100 GPH, 12-Volt, 1.5-Amp Draw, ¾-Inch Interior Diameter Hose, 29-Inch Wire

Product ID: 302438812

Details

Brand
attwood
Colour
White
Material
Plastic
Product dimensions
18.9L x 27.8W
Style
S1100

⚡1100 GPH Power

🔌12V Efficiency

🛥️Compact Design

Description

🚀 Elevate Your Boating Experience with Effortless Water Management!

🔧 EASY INSTALLATION - Quickly installs in tight spaces with a horizontal mount, making setup a breeze.
🔒 DURABLE RELIABLE - Includes a mercury-free switch and robust components for long-lasting performance.
🌊 AUTOMATIC OPERATION - Meets automatic switch pump requirements for vessels 20 feet and over, ensuring peace of mind.
📏 VERSATILE COMPATIBILITY - Compatible with 1-1/8” interior diameter hoses, making it adaptable for various setups.
🚤 HIGH CAPACITY PERFORMANCE - Effortlessly pumps 1100 gallons per hour, perfect for larger recreational boats.

The Attwood 4511-7 Sahara S1100 Automatic Bilge Pump is engineered for larger recreational boats, delivering a powerful 1100 GPH flow rate. Designed for easy installation and reliable operation, this compact pump features a durable build, automatic switch compliance, and comes with all necessary components for a hassle-free setup.

Specifications

ASIN	B001O0DEEY
ASIN	B001O0DEEY
Best Sellers Rank	#33,538 in Sporting Goods ( See Top 100 in Sporting Goods ) #47 in Boat Plumbing
Brand Name	attwood
Color	White
Customer Reviews	4.6 4.6 out of 5 stars (538)
Customer reviews	4.6 4.6 out of 5 stars (538)
Date First Available	6 August 2012
Department	Unisex-Adult
Flow Rate	18.33 Gallons Per Minute
Global Trade Identification Number	00022697451170
Included Components	End Product & Information
Is Discontinued By Manufacturer	No
Item Dimensions L x W x H	18.9L x 27.8W x 21.9H centimeters
Item Type Name	boating-tools
Item Weight	499 g
Item model number	4511-7
Manufacturer	Attwood
Manufacturer	Attwood
Manufacturer Part Number	4511-7
Material Type	Plastic
Maximum Lifting Height	3.3 Feet
Model Number	4511-7
Number of Items	1
Power Source	Corded Electric
Product Dimensions	18.87 x 27.76 x 21.89 cm; 498.95 g
Product Style	S1100
Specific Uses For Product	personal
UPC	022697451170
Unit Count	1 Count
Voltage	13.6 Volts

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