Head sink seacock

[Angel D.]

Quick question to all you Vikings out here , hull out list is almoust ready but have a question on the marlon valve on the sink . I think is one inch or above. Will please someone share some light on the matter , tread is NPS ? Size ?

Ericson 381 1984

Thanks in advance fellows !

 

[Prairie Schooner]

Quick question to all you Vikings out here , hull out list is almoust ready but have a question on the marlon valve on the sink . I think is one inch or above. Will please someone share some light on the matter , tread is NPS ? Size ?

Ericson 381 1984

Thanks in advance fellows !

Many (all?) of the Marelon fittings are straight thread. Sorry Angel, I don't remember the size.

 

[Kenneth K]

On the 32-3, the sink drain and toilet intake share a 3/4" Forespar 850 ball valve. All the waste thru-hulls are 1.25". Yeah, the Forespar threads are NPS.

 

[Angel D.]

Thanks guys , is perhaps a 3/4 most likely.

 

[peaman]

On the 32-3, the sink drain and toilet intake share a 3/4" Forespar 850 ball valve.

My 1987 32-3 has separate through hull valves for head sink drain and toilet flush water intake. I assume that is as originally built. I cannot report sizes, but the intake may well be 3/4", and I'm sure the sink drain is larger.

 

[Kenneth K]

My 1987 32-3 has separate through hull valves for head sink drain and toilet flush water intake.

I'd like to see where they located the second intake.

The single intake thru-hull requires a tee, which isn't optimal, but it does allow you to flush with sink water, or to winterize the head by pouring antifreeze into the sink.

 

[Angel D.]

My 1987 32-3 has separate through hull valves for head sink drain and toilet flush water intake. I assume that is as originally built. I cannot report sizes, but the intake may well be 3/4", and I'm sure the sink drain is larger.

Thanks guys .It does look the same here. Flush hose is 3/4" and Sink hose is larger 1-1/8" . And the seacocks look different in size. I think I'll take off the nipple and caliper measure the valve itself.
I'll keep a wood plug nearby

 

[Kenneth K]

I don't think Forespar ever made a 1-1/8" ball valve (just 1/2, 3/4, 1, 1-1/4, 1-1/2, 2")

Search Results for: MF 850

 

[Angel D.]

Hello friends, turns out that E381-1984 head sink is a 1in. Seacock. Figure it out by measure of the treads at the nipple .
Choice of replacing with a Gemlux True design seacock due to a humble sailor Budget and great reviews on the product.

Hope that you all are well .

A. Adames

 

[gabriel]

Hello friends, turns out that E381-1984 head sink is a 1in. Seacock. Figure it out by measure of the treads at the nipple . View attachment 53024
Choice of replacing with a Gemlux True design seacock due to a humble sailor Budget and great reviews on the product.

Hope that you all are well .

A. Adames

What is the measurement of the inside diameter (ID)?

 

[peaman]

I'd like to see where they located the second intake.

The single intake thru-hull requires a tee, which isn't optimal, but it does allow you to flush with sink water, or to winterize the head by pouring antifreeze into the sink.

The flush intake is lowest, just inside the vanity door. The overboard discharge is a few inches to port, and the sink drain thru hull is a few inches farther to port. The sink drain hose looks to be 1” I.d. The thin black hose is for shower/faucet.

 

[Nick J]

Here's some info from Forespar's website. Page 8 of the catalog has a table for the 850 ball valves. Looks like the thread size and valve size are the same.

Ball Valves

Forespar MF 850 series of Ball Valves are precision molded in high strength Marelon. Their great strength, light weight, and complete freedom from corrosion and electrolysis make them the ideal valve for controlling inlet and outlet water requirements above and below the waterline. Forespar 850...

www.forespar.com