T
[email protected]
- Jan 1, 1970
- 0
I'm "supposed to be" building my house, but Pete got me interested in a
closer look at Shurflo pumps. Thanks. I enjoyed this project.
Recap and new data on my 3 test pumps:
Test set-up: moving water between 2 large tanks, 4 +/- ft. static head,
150 ft. of 5/8" garden hose friction head.
Recall that all current draws are measured from the 24 VDC battery bus.
(For AC load I read DC input to inverter.)
AC-powered submersible, 120V, 5A, sold (long ago) by Montgomery Ward,
similar to, but slightly larger and stronger than Gig's 1/6 Hp Flotec.
Current: 13 Amps (DC input to inverter)
Delivery: 350 gal. in 1hr. 45min. = 200 gph, 3.3 gpm
Blank-off pressure: 12 psi (static head = 26 ft. max.)
Performance Index: 15.4 gal/hr/amp
DC-powered 3" centrifugal, Bell & Gossett P4-132-5-5 pump, Dayton 4Z143
24 VDC, 1/4 Hp motor, Full Load 14.9 Amps.
Current: 10.1 Amps
Delivery: 225 gal. in 1 hr. = 225 gph, 3.75 gpm
Blank-off pressure: 13 psi (static head = 28 ft. max.)
Performance index: 22.5 gal/hr/amp
Shurflo 2088-403-444 12 VDC RV pump.
Current: 3.0 Amps @ 13 Volts (1.5 A if 24 V unit?)
Delivery: 30 gal. in 12 min. 20 sec. = 146 gph, 2.4 gpm
Blank-off pressure: n/a; internal pressure switch, 30 psi on, 45 psi off.
(static head = 65 ft. max.) (current at shut-off was 6 Amps @ 13 V.)
Performance index: 97 gal./hr/amp
Several of us have suggested that Gig use an RV pump. Being a wobble-plate
construction, it is nearly a constant-displacement pump, so its output is
about constant with pressure. Its efficiency will not fall off dramatically
as the pressure tank fills, as has been my experience with centrifugal
pumps. The static head limitation of the submersible pump may interfere with
Gig's being able to pump water into his attic preheat tank.
Tom Willmon
Mountainair, (mid) New Mexico, USA
Net-Tamer V 1.12.0 - Registered
closer look at Shurflo pumps. Thanks. I enjoyed this project.
Recap and new data on my 3 test pumps:
Test set-up: moving water between 2 large tanks, 4 +/- ft. static head,
150 ft. of 5/8" garden hose friction head.
Recall that all current draws are measured from the 24 VDC battery bus.
(For AC load I read DC input to inverter.)
AC-powered submersible, 120V, 5A, sold (long ago) by Montgomery Ward,
similar to, but slightly larger and stronger than Gig's 1/6 Hp Flotec.
Current: 13 Amps (DC input to inverter)
Delivery: 350 gal. in 1hr. 45min. = 200 gph, 3.3 gpm
Blank-off pressure: 12 psi (static head = 26 ft. max.)
Performance Index: 15.4 gal/hr/amp
DC-powered 3" centrifugal, Bell & Gossett P4-132-5-5 pump, Dayton 4Z143
24 VDC, 1/4 Hp motor, Full Load 14.9 Amps.
Current: 10.1 Amps
Delivery: 225 gal. in 1 hr. = 225 gph, 3.75 gpm
Blank-off pressure: 13 psi (static head = 28 ft. max.)
Performance index: 22.5 gal/hr/amp
Shurflo 2088-403-444 12 VDC RV pump.
Current: 3.0 Amps @ 13 Volts (1.5 A if 24 V unit?)
Delivery: 30 gal. in 12 min. 20 sec. = 146 gph, 2.4 gpm
Blank-off pressure: n/a; internal pressure switch, 30 psi on, 45 psi off.
(static head = 65 ft. max.) (current at shut-off was 6 Amps @ 13 V.)
Performance index: 97 gal./hr/amp
Several of us have suggested that Gig use an RV pump. Being a wobble-plate
construction, it is nearly a constant-displacement pump, so its output is
about constant with pressure. Its efficiency will not fall off dramatically
as the pressure tank fills, as has been my experience with centrifugal
pumps. The static head limitation of the submersible pump may interfere with
Gig's being able to pump water into his attic preheat tank.
Tom Willmon
Mountainair, (mid) New Mexico, USA
Net-Tamer V 1.12.0 - Registered
