Listing Detail Tabs

Heavy duty diaphragm pump

Looking for an efficient way to pump out bilge from your boat? Well, this Seaflo 51 Series Automatic Diaphragm Pump has got you covered. The Seaflo 51 Series is a heavy-duty water pump. It provides high volume water flow with reduced pump cycling, thanks to the large five-chamber diaphragm. These models are designed to run on water systems with no accumulator tank necessary, and up to five fixtures! It is also suited for use with a holding tank water system, as may be found in a boat, RV or remote cabin. It provides up to 5.0 gallons per minute. The 51-Series pumps are self-priming and can run dry without damage. The internal bypass feature allows excess water to recirculate inside the pump, eliminating the need for an accumulator tank. This automatic demand water system pump has a built-in pressure switch, which automatically starts and stops and stops the pump when the faucet is opened and closed. They’re easy to install, service and winterize.

How a Diaphragm Pump Works
In front of the motor is a valve assembly containing two to five valve pump chambers. Each valve chamber has a diaphragm behind it in the lower pump housing. As the motor shaft turns, an internal cam positioned behind the diaphragms causes the diaphragms to be pushed forward, then back in a continuous sequence creating suction. As this suction builds, fluid is pulled through the inlet, through the various valve…

**NOTE** This listing is for the size/colour as stated in the Auction title ONLY. The images and description above may include other variations of this product.

=== About Our Store ===

Fishing, Boating, Diving, Watersports… it's all about getting you awesome Marine Deals. We're dedicated to giving you the opportunity to buy marine and fishing equipment at the lowest prices you will find!

> Why buy from Marine Deals?
- 30-day No Worries Returns
- Fast Shipping - usually 1 to 2 days
- Minimum 12-month Warranty
- Toll-Free Support Line
There were no answered questions or comments placed on this listing.
Your question and answer privileges have been disabled.
You must log in to view questions and answers on this listing. We recommend reading questions before you make any purchases.
You must log in to ask or answer questions posted. We recommend reading questions before you make any purchases. Available only to approved bidders. You must be an authenticated member to ask questions Find out more about becoming authenticated. Your account is in debt Your current account balance is You must credit your account to use this feature.
Firearms licence #
Firearms licence holder name
First name is required
Last name is required
Your current account balance is Please note you will lose your question and answer privileges if your account is in debt for more than 2 weeks. Credit your account.
I confirm that I am over 18 years old.
To prevent your personal details being misused please do not put emails or phone numbers in questions. Failure to comply may result in the suspension of your account. The seller cannot add a Buy Now price once bidding has started.

Shipping options

  • CourierPost Nationwide (1 to 3 days)$9.95
  • Store does not allow pick-ups
  • Boat location: Auckland City, Auckland, NZ

Payment options

  • Other options
    NZ bank deposit

Pay Now includes:

Buyer Protection Learn More