Forespar Marelon Ball Valves & Tailpieces

Priced: $3.19 Rated:   - 5 stars out of 5 by 5 reviews. $3.19
49% off
Regularly: $6.29
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Forespar Marelon Ball Valves & Tailpieces -
A. Marelon Ball Valves - High-strength, lightweight glass-reinforced Marelon. After 11,000 duty cycles, they still hold 80psi of air leak-free.

B. MarelonTailpieces - Hose barbs on one end. NPS pipe threads on the other.

C. Marelon 90degree Elbow

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Forespar Marelon Ball Valves & Tailpieces Reviews:

Positive Reviews:

Thought the box was empty

More compact than other valves and very light. Aside from the marine world non - NPT, it would be a great valve for use in hard environments.
Calhoun at on 05/05/2012

Solid, reliable, enduring.

I've used Marelon valves and fittings for over 20 years and they are the absolute best for through-hull marine environments.
Richardhc at on 04/04/2013

Excellent produgt

Used to attach fill hose to fresh water tank. Perfect!
Captain Ron at on 06/06/2011

Ease of doing business with West Marine

Connectors for water inlet/outlet on marine air conditioner.
Jim543 at on 02/02/2014

Neutral Reviews:

Be Careful - Test before launching

I've used Marelon products for through hull fittings for years. Great Products BUT quality control seems to be slipping with Forespar. I installed two of these and a straight and right angle tail piece. Added sikoflex bedding compound making sure it was well into the threads, screwed in the tail pieces. All went together smoothly, the hull fittings screwed in 6 turns (recommended OK) and was firm. The tails screwed in 7 turns and were firm. Waited 48 hrs for the bedding to cure. Launched - and was horrified to see THREE leaks - one from each tail piece and one from a through hull. Two were slight drips, one was a stream! I could not believe it. Had to re-haul instantly, took it all apart (that wasn't easy, it was really bedded well). Reassembed this time using West Silicone bedding. Then after 24hrs water tested by putting a bung in the through-hulls and filling the pipes with water. No leaks. Lesson learned, Water test a new through-hull/ballvalve Before launch - it would have saved us $600. Why did it leak? Close inspection of the fittings that leaked showed two ridges in the bottom of the threads left over from the molding process. I believe these should have been cleaned up after the molding process to assure clean, smooth threads. Somehow the ridges allowed a pathway for the water to penetrate. The silicone bedding covered it better.
Richardhc at on 09/09/2013