Important Announcement: Dyers RV Temporary Closure

Dear Valued Customers,

We will be closed from Tuesday, June 11th through Sunday, June 16th for the Dyers RV Camping Trip. Regular business hours will resume on Monday, June 17th.

Thank you for your understanding and continued support. We look forward to serving you upon our return!

Best regards, The Dyers RV Team


SHURflo 4.0 GPM High Flow By-Pass Pump

Smooth flow and reduced cycling with Flow Reaction Technology. This High-Flow Revolution pump has a modern green design for reduction of hazardous waste and power consumption.
Item # 72420
Special Order Item No
Ships LTL Freight No
5+ In Stock

Description / SHURflo 4.0 GPM High Flow By-Pass Pump

This pump is designed to replace both the 4900 and 5900 Smart Sensor series products, as well as the 2088-453-444.

SHURFLO’s® New 4048 series fresh water pump design was created with a unique one-piece diaphragm and internal by-pass, assuring long life and top performance in all plumbing systems. The 4048 series pump is built for high flow demand, smooth flow and no rapid cycling.

SHURFLO’s® quality reputation has been built on the reliability and dependability of every pump we build. The 4048 series fresh water automatic demand pump is quiet, thermally protected and can run dry without damage.

Type: 4 Chamber diaphtagm pump
Ports: 1/2" - 14 NPSM - Male
Dry-Prime: 6 Feet
Inlet PSI: 30 PSI max
Control: Shut-Off 55 PSI, Restart 40 PSI, Max by-pass 65 PSI
Protection: Thermal overload, automatic restart
Fuse: 15A fuse recommended
Run Dry: Yes
Liquid: 130 F max
Motor: 12VDC Permanent magnet, intermittent duty

More Information

Item # 72420
Brand SHURflo
Model 4048-153-E75
Replaces SHURflo 4900 and 5900 Smart Sensor series products, as well as 2088-453-444
Voltage 12V DC
Flow Rate 4.0 GPM
Max Amp Draw 10 Amps @ 60 PSI
Pressure 55 PSI
Features Smooth Flow
Reduced Cycling with Flow Reaction Technology*
Modern TgreenU design for reduction of hazardous waste and power consumption
4 GPM and 55 PSI high performance
Automatic thermal overload protection
Runs dry without damage
Built in check valve prevents backflow
Dry primes to 6 vertical feet
Automatic demand
4900 & 5900 Smart Sensor Replacement
Meets CSA, CE, e-Mark and C-Tick standards
Dimensions 10.21" L x 5" W x 4.81" H
Warranty 2 Year
Special Order Item No
UPC 752324011643
LTL Freight No

Product Attachments

Customer Reviews

Very happy! Good pressure, quiet, good price!
Review by Steve
Great pump!
Need to field test it yet.
Review by Rollie
Although, I haven't used it yet.. It works fine. Is the quietest pump that I have ever had in a trailer.. Hoping for many years of use.

2 Item(s)

per page
Write Your Own Review
You're reviewing: SHURflo 4.0 GPM High Flow By-Pass Pump
Your Rating:

You submitted your review for moderation.

This form is protected by reCAPTCHA - the Google Privacy Policy and Terms of Service apply.

WARNING: This product can expose you to chemicals, which is known to the State of California to cause cancer and reproductive harm. For more information, go to