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===Check Valves=== | ===Check Valves=== | ||
====Flapper Check Valves==== | ====Flapper Check Valves==== | ||
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| + | [[File:Jandy Check Valve Flapper.jpg|thumb]] | ||
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| + | [[File:Jandy Check Valve Orientation.png|thumb]] | ||
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====Swing Check Valves==== | ====Swing Check Valves==== | ||
Revision as of 15:44, 2 January 2023
Valves
On Pipes
Diverter Valves
Motorized Valve Actuators can be screwed on top of a diverter valve for a pool automation system to change the valve position.
Diverters and check valves use the same body from a manufacture. You can change a check valve into a 2-way diverter or the reverse without cutting out the body and changing it. Check you are getting the correct size parts for the body size you have installed.
Jandy
Jandy has two lines of high quality diverter valves - Grey and Never Lube. Both types of valves work the same way. The Grey valve has a grease cap that can be lubed without any dis-assembly. The Never Lube Valve is completely maintenance-free.
The valves come in 2 port and 3 port models. Both models are available in 1.5" x 2" and 2" x 2.5" sizes. The Never Lube is also available in 2.5" x 3" size.
This Jandy Parts Catalog has a complete list of valves and replacement parts.
Pentair
Pentair diverter valves are lube-free and never require lubrication. There are 2-way and 3-way models that accepts 1 1/2 in., 2 in., and 2 1/2 in. slip outside PVC plumbing.
Pentair diverters have a Fiberglass reinforced handle and can withstand pressure up to 150 psi.
Hayward
Hayward has 2-way and 3-way diverter valves in 1.5" x 2" and 2" x 2.5" sizes in CPVC and PVC materials.
Fixing Diverter Valve Stripped Screw Holes
- Take the top off the valve[1]
- Take a screw and coat it with Vaseline
- Fill the screw hole with epoxy
- Screw the screw in the hole
- Wait until the epoxy is almost set and back out the screw
- Wait until the epoxy full cures and put the top back on.
You do have to make sure not to let the epoxy set above the top of the screw hole.
Or
Fill both holes completely with putty and let dry, then drill a pilot hole and then create new threads with the screw.[2]
Tips on Preventing Stripped Screws on Diverter Valves
- When installing the screws, turn the screw counterclockwise until it drops into the original threads and then go clockwise to tighten. Crossthreading will ruin the threads quickly.[3]
- When installing an actuator, use the same manufacturer as the valve. The screw threads are different for different manufacturers and the screws will not go into the same threads. The original plastic threads will be damaged unless the threads match exactly.
Replacing Broken Grease Plug in Jandy Grey Diverter Valve
You can buy the diverter kit that converts the valve to a NeverLube and includes a red plug to go in the grease cap hole or you can buy a replacement grease cap.[4]
The thread is 1/8" NPT and you can use a brass or plastic plug and buy the entire new Jandy valve and pull out the entire assembly from the body and install it into the existing valve.
Ball Valves
You can usually identify the manufacturer of a ball valve by it's handle.
Jandy has a line of Gold Standard Ball Valves with 1 1/2' and 2" with unions and 3/4' to 4" without unions.
Praher has a line of ball valves.
Repairs
You can buy new insides for the praher valves, easy swap out. You may need to buy an identical valve and use the internals.
Knife Gate Valves
Check Valves
Flapper Check Valves
Swing Check Valves
Spring Check Valves
On Filters
Multi-Purpose Valve (MPV)
See MPV Valves
Slide Valves
See Slide Valves
Thread Types
There are confusing three letter and four letter acronyms that describe the type of threads on a fitting. The correct threads needs to used for screw in fittings to have a tight, strong, and leak proof connection. Common types used in pool plumbing are:
- S- generally means a slip fitting that is not threaded and must be glued
- FPT - female(internal) pipe thread.
- MPT - male(external) pipe thread
FPT and MPT are types of National Pipe Threads FPT and MPT are tapered for sealing, often without any thread sealant.
PT, NPT, FPT acronyms have the same meaning for American National Standard Pipe Threads. Female NPT threads can be designated as FPT and male NPT threads can be designated as MPT.
Definition of Pipe Thread Acronyms contains other acronyms,
- ↑ https://www.troublefreepool.com/threads/stripped-valve-actuator-screws.211094/post-1850619
- ↑ https://www.troublefreepool.com/threads/stripped-valve-actuator-screws.211094/post-1852053
- ↑ https://www.troublefreepool.com/threads/stripped-valve-actuator-screws.211094/post-1850971
- ↑ https://www.troublefreepool.com/threads/repair-of-leaking-jandy-valve.250828/post-2196739
