skip to main content

How to select a slide pump?

11 years ago

Looking for some help in figuring out how to size a pump for a custom slide. The slide has dual 1" inlets and requires a total of 80 GPM. I will have a dedicated pump for this slide. Dedicated drains, 3" plumbing from pool to pump and from pump to slide (in case I use a different slide later that needs more water). It will split into two 1" feeds at the slide. Manufacturer recommends a valve on each feed to adjust flow.

Question is, one PB is quoting a 2hp, single speed pump. Looking at the flow charts, and estimating TDH around 30-40?, it seems like this pump will push over 150 gpm!!! That seems like way too much!

How can I properly estimate TDH and get the proper sized single speed pump? And, silly question, but if I got a bugger pump than needed, and adjusted the valves at the slide to limit flow, does that have a negative impact on the motor?

Comment (1)

poolguynj
11 years ago
mas985 did a very nice workup on TFP that should help.

Gardenweb doesn't seem to like anyone posting TFP links, which is short sighted of them, IMHO, but that is another issue. Somehow, they have it in the Spam site list. You believe that, right?

They have a Pump Basics section in Pool School and the more detailed thread that mas985 wrote titled: Hydraulics 101 - Have you lost your head.

Most of the time, a return is also plumbed in the pool to direct excess flow into the pool.

A 2" line can't handle more than 100 GPM at 10 feet per second so I wouldn't sweat the 150 gpm @ 35 feet of head. Here is a link to a pipe size chart:

http://www.engineeringtoolbox.com/pvc-schedule-40-pipe-friction-loss-diagram-d_1147.html

Scott
Related Professionals
College Station Swimming Pool Builders · Pearland Swimming Pool Builders · River Forest Landscape Architects & Landscape Designers · Corona Landscape Contractors · Doctor Phillips Landscape Contractors · Euclid Landscape Contractors · Franklin Landscape Contractors · Huntley Landscape Contractors · Marlborough Landscape Contractors · Reisterstown Landscape Contractors · Eastlake Landscape Contractors · Greeley Decks, Patios & Outdoor Enclosures · Houston Decks, Patios & Outdoor Enclosures · Mobile Decks, Patios & Outdoor Enclosures · Troy Decks, Patios & Outdoor Enclosures

Sign Up to Comment

Related Stories

DECORATING GUIDES Houzz Tour: Couple Pares Down and Pumps Up the Style

By Becky Harris

A big transition from a large suburban house to a 1,200-square-foot urban condo is eased by good design

COLOR Speed-Dial Color Selection to Get the Best Result

By Kimberly Collins Jermain

You’ve belabored your color decisions and are still stuck. Here is how to evaluate your space and make choices that are right for you

DOORS Barn Doors Slide Into Style

By Living Small: City & Small Space Consulting

You don't have to live in a farmhouse to use a barn door in your home. Here's how to make these space savers work in any room

DOORS Opening Acts: Folding, Sliding and Pivoting Doors

By Scheer & Co. Interior Design

Transform your space with glass doors that open dramatically to the breezes and the views

HOUZZ TOURS Houzz Tour: Sliding Doors Open Up a Small Space in New York City

By Mitchell Parker

A wall teardown and custom treatments add more options for living and entertaining in a 450-square-foot apartment

COLOR Inspired by Peeps: A Sliding Scale of Pastels

By Lily Gahagan

Opt For Just a Little or Go All Out With Pinks, Yellows and Light Blues

GARDENING AND LANDSCAPING Patio Details: Sliding Fabric Panels Filter the Light Just Right

By Annie Thornton

Stepping up to the harsh sun and heat of the desert Southwest, this intimate patio is an exotic escape right outside

BATHROOM VANITIES Better Places to Stash That Soap

Banish gloppy bars and flimsy pumps, and the only things you’ll need to clean are your hands

DINING ROOMS New This Week: 6 Modern Dining Zones in Homes Big and Small

By Mitchell Parker

Look to splashy accent walls, right-sized tables and indoor slides to make the most of your open layout

DESIGN DICTIONARY Pocket Door

This doors pulls a disappearing act by sliding out of sight on a track

Sponsored

NME Builders LLC

2 Reviews

Industry Leading General Contractors in Franklin County, OH

More Discussions

GLI Sandstone Tan Vinyl Pool Liner

1

How To Rehab Old Pool Decking

0

Best outdoor furniture brand? And which type of Sunbrella?

1

Decking and stairs to pool

1

Small Pool Patio Furnishing Ideas

0