Schedule 40 DWV

Woot123

Member
Aug 5, 2021
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Reading through these forums its been mentioned to use Schedule 40 PVC and avoid DWV for above ground pool plumbing. But what if something is both DWV and Schedule 40 (see links bellow)? Could these be used?


 
Reading through these forums its been mentioned to use Schedule 40 PVC and avoid DWV for above ground pool plumbing. But what if something is both DWV and Schedule 40 (see links bellow)? Could these be used?


The first link is just for pipe, the pipe needs to be sch40. You can use sch40 for drainage but not the other way around.

The second link is DWV and says it’s not for pressure applications.
 
A pipe can be dual rated ASTM D 1785 and ASTM D 2665, but it has to say ASTM D 1785 if it's going to be used for pressure.

The pipe should also be labeled NSF-PW (National Sanitation Foundation - Potable Water) and Schedule 40 PVC.
 
A pipe can be dual rated ASTM D 1785 and ASTM D 2665, but it has to say ASTM D 1785 if it's going to be used for pressure.

The pipe should also be labeled NSF-PW (National Sanitation Foundation - Potable Water) and Schedule 40 PVC.
Thanks and sorry one more question.

Do fittings need to be ASTM D 1785 as well? For example, would this 90 be suitable?

 
Thanks and sorry one more question.

Do fittings need to be ASTM D 1785 as well? For example, would this 90 be suitable?

That fitting meets ASTM-1784 which is a general PVC specification not for pressurized usage.

ASTM-1785 is for pressurized applications such as in pool equipment.
 
ASTM D2466-21
An ASTM designation number identifies a unique version of an ASTM standard.
D2466-21
D = Miscellaneous Materials
2466 = assigned sequential number
21 = year of original adoption (or, In the case of revision, the last year of last revision)

Standard Specification for Poly(Vinyl Chloride) (PVC) Plastic Pipe Fittings, Schedule 40.


Abstract
This specification covers poly(vinyl chloride) (PVC) Schedule 40 pipe fittings made from four PVC plastic compounds and intended for use with Iron Pipe Size (IPS) outside-diameter plastic pipe.

Fittings fabricated by welding are not included in this specification.

Included are requirements for materials, workmanship, dimensions, and burst pressure.

The products covered by this specification are intended for use with the distribution of pressurized liquids only, which are chemically compatible with the piping materials.
1. Scope
1.1 This specification covers poly(vinyl chloride) (PVC) Schedule 40 pipe fittings.

Included are requirements for materials, workmanship, dimensions, and burst pressure.
 
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