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Joywayus Female Backflow Preventer Thread Review

3

·

Poor

Revainrating 2.5 out of 5  
Rating 
2.7
🔧 Fittings, 🚰 Hydraulics, Pneumatics & Plumbing

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Description of Joywayus Female Backflow Preventer Thread

Product Size:3/4" Thread Female. This valve is used to prevent the back flow of fluids. Maximum pressure rating 200 psi,200 WOG (water, Oil, gas). This valve has a brass body with a stainless steel spring for long-lasting durability. Brass for corrosion resistance, ductility at high temperatures, and low magnetic permeability.

Reviews

Global ratings 3
  • 5
    1
  • 4
    0
  • 3
    0
  • 2
    1
  • 1
    1

Type of review

Revainrating 5 out of 5

Keeps water in the right direction

I installed this on my water heater where I had a floback forcing hot water back up the cold water lines. Multiple cold showers when certain faucets were turned up. It helped a lot.

Pros
  • Product size: 3/4" female thread
Cons
  • Very expensive

Revainrating 2 out of 5

The internal threads are too short. Male threads sink and will not seal causing leakage

Female thread is too short. The male thread goes down and does not seal, causing leakage. When I received the check valves I noticed that they are shorter than usual. I couldn't tighten the 1/2 brass nipples enough to seal properly. The threads are gone. The valve leaked every time.

Pros
  • This valve has a brass body with a stainless steel spring for durability
Cons
  • No instructions

Revainrating 1 out of 5

leaks. Huge waste of time.

The 3/4" NPT thread is not a standard size. The thread is too loose. The 3/4" male adapter just falls all the way down. Also with 5-10 layers of Teflon tape. I've spent several hours of my time installing and reinstalling these things to try and get them to stop leaking. Vain. I've been a plumber for over 30 years so it's not a question of technique or skill. Valves are just crap. Looks like I'll pay for something big like Watts so I don't have to spend more time changing valves.

Pros
  • This valve is used to prevent liquid backflow.
Cons
  • High price.