Del Ozone CO-0101 DELCHECK check valve, 1.5 inch socket by 2 inch spigotDel Ozone DELCHECK Check Valve, 1/3#, 1.5" SKT by 2" SPG$3299
Del Ozone CO-0101 DELCHECK check valve, 1.5 inch socket by 2 inch spigot
Shop all Del Ozone

Del Ozone DELCHECK Check Valve, 1/3#, 1.5" SKT by 2" SPG

Ask a questionAPS # 25771
$3299
Out of stock
Get volume pricing Request a quote

30 day returns · Easy, with prepaid labels provided

Quick overview

  • Genuine Del Ozone part The DELCHECK check valve, part CO-0101.
  • Low 1/3 lb cracking pressure A light spring opens with very little differential, which is what a low flow line needs.
  • 1.5 inch socket by 2 inch spigot One end takes 1.5 inch pipe into the socket, the other is a 2 inch spigot that goes into a 2 inch fitting.
  • One way only A check valve stops water travelling back up the line when the system shuts down.
  • Protects upstream equipment Backflow is what pushes pool water into places it does not belong, and a working check valve is the cheap defense.
  • Note the direction Check valves are directional. Confirm the flow arrow points the right way before you glue anything.
Full description and specifications ↓

Need a hand?

Bilingual support from pool professionals.
(888) 751-8084CallChat with a techChatEmail usEmail

Send us a message

A pool professional will get back to you, usually the same business day.

About Del Ozone DELCHECK Check Valve, 1/3#, 1.5" SKT by 2" SPG, SKU DEL-451-9868. We will include it with your message.

We use your details to answer this message and nothing else.

Frequently bought together

Current item Del Ozone DELCHECK Check Valve, 1/3#, 1.5" SKT by 2" SPG
Del Ozone

DELCHECK Check Valve, 1/3#, 1.5" SKT by 2" SPG

$3299
Hayward Cover O-Ring for SP0714T Vari-Flo XL Valve
Hayward

Cover O-Ring for SP0714T Vari-Flo XL Valve

$1799
Hayward Paralevel Startup Kit
Hayward

Paralevel Startup Kit

$5999
Hayward 1-1/2" Combo Hose Adapter for Filters, Pumps, Skimmers and Chlorine Feeders (2 Pack)
Hayward

1-1/2" Combo Hose Adapter for Filters, Pumps, Skimmers and Chlorine Feeders (2 Pack)

$1099
Hayward Genuine OEM SP1082 Skimmer Basket
Hayward

Genuine OEM SP1082 Skimmer Basket

$2499
Paramount 6 Port Water Valve Module
Paramount

6 Port Water Valve Module

$36099
Hayward Auto-Skim Skimmer for Vinyl/Fiberglass Pools, 1.5" FPT, Square Lid, White
Hayward

Auto-Skim Skimmer for Vinyl/Fiberglass Pools, 1.5" FPT, Square Lid, White

$19199
Subtotal

Similar products

Other products people compare with this one.

CMP 25830-400-000 Hydro Seal black CPVC check valve, 2 in. socket x 2.5 in. spigot CMP Hydro Seal Black CPVC Check Valve 2 in. S x 2.5 in. SPGT 25830-400-000$4099 Hayward SP0723 Trimline 2-way ball valve, 1-1/2 inch mpt by 1-1/2 inch fpt Hayward Trimline 2-Way Ball Valve, 1-1/2" mpt x 1-1/2" fpt$4199 Hayward PSV2SDGR 1-1/2 inch by 2 inch PSV Series 2-way PVC diverter valve Hayward 1-1/2" x 2" PSV Series 2-Way Diverter Valve, PVC$4399 PoolMiser RP-402 replacement float valve PoolMiser Valve Only, RP-402$3299 Praher 200-010 2 inch single union ball valve, socket by socket Praher 2" Single Union Blocked Ball Valve Skt/Skt$3799 Hayward SP0729 1-1/2 in. 2-way Econoline ABS ball valve Hayward 1-1/2" 2-Way Econoline ABS Ball Valve$3899 Rola-Chem 521160 3/8 inch B PVC inline check valve assembly Rola-Chem 3/8" B PVC Inline Check Valve Assembly$4399 Hayward SP0722 2-way ball valve with 1-1/2 in FPT threaded connections Hayward 2-Way Ball Valve with 1-1/2 Inch FPT Threaded Connection$4099 CMP 25800-210-000 PVC ball valve, 2 inch slip by slip CMP PVC Ball Valve 2" Slip x Slip$2199 Pentair 263038 two port PVC diverter valve for 1-1/2 inch and 2 inch plumbing Pentair Two Port Diverter Valve, 1.5" x 2"$4399
Lasco V20491N 2 inch white PVC slip ball valve Lasco 2" PVC Slip Ball Valve SCH80$3199 SuperPro 25802-150-000 1-1/2 inch slip x slip PVC ball valve with union SuperPro 1-1/2" Slip x Slip PVC Ball Valve with Union$3099 SuperPro SP0801-20H2 2 inch CPVC check valve, slip by slip SuperPro 2" CPVC Check Valve$4799 Hayward SP1091CV male combo adaptor check valve 1-1/2 inch by 1-1/4 inch Hayward Male Combo Adaptor Check Valve 1-1/2" x 1-1/4"$2699 CMP Hydroseal 2 inch clear swing check valve, part 25062-209-000 CMP Hydroseal Swing Check Valve, 2" Clear$3199 Waterco 14652 check valve with 2 in. internal and 2-1/2 in. external ports Waterco 2" to 2-1/2" Check Valve$4299 Jandy BVSU020 2 inch gray PVC single union heavy duty ball valve Jandy 2" Gray PVC Single Union HD Ball Valve$4699 Lasco V17801N gray 801 Series 1-1/2 inch true union ball valve Lasco 1-1/2" Gray 801 Series True Union Ball Valve$4599 Hayward SP0723S Trimline 1-1/2 inch ball valve, MIP by socket Hayward Trimline 1-1/2" Ball Valve$4199 DEL Ozone CO-0103 check valve with 1.5 inch socket and 2 inch spigot ends DEL Ozone Check Valve, 5 lb, 1.5 inch Socket by 2 inch Spigot$3499

Product details

The DELCHECK CO-0101 is a check valve with a 1/3 pound spring, plumbed 1.5 inch socket by 2 inch spigot.

What the spring rating tells you

Every check valve needs a small pressure difference before it opens. The 1/3 pound rating here is deliberately light, so a line that is not carrying much flow can still push the valve open rather than sitting closed against it. Fitting a heavier spring in the same place is a common way to strangle a low flow circuit.

Direction and sizing

A check valve is directional, and gluing one in backwards means cutting it out again. Check the flow marking on the body before you dry fit. Sizing is worth a second look too: the listing describes the valve as 1.5 inch socket by 2 inch spigot in one place and simply as 2 inch in another, so measure both ends of the valve you are removing.

Specifications
Brand Del Ozone
Manufacturer part number CO-0101
Type Check valve
Series DELCHECK
Spring rating 1/3#
Connections 1.5" SKT by 2" SPG
Also listed as 1/3# - 2"
Shipping weight 0.48 lb
Ships Parcel

Request a quote

Need a volume price, a freight quote, or pricing in writing before you order? We reply the same business day.

Request a quote

Customer reviews

Questions and answers

What people ask about this product, answered by our pool techs.

What does 1/3# mean on a check valve?
It is the spring rating, the pressure needed to crack the valve open. A 1/3 pound spring is a light one, chosen so a low flow line can still push it open.
What are the connection sizes?
A 1.5 inch socket on one end and a 2 inch spigot on the other. The source also lists the valve simply as 1/3# and 2 inch, so measure both ends of what you are replacing before you cut anything.
Which way does it go in?
A check valve only works in one direction. Find the flow marking on the body and orient it with the direction of travel before gluing.
What does a check valve actually prevent?
Water running backwards through the line once flow stops. That backflow is what lets pool water reach equipment that was never meant to see it.
Ask your own question