How to order Forespar Marine Plumbing Valves

Date Posted:20 December 2023 

How do you choose between the Custom OEM Pro Series Valves, Flange Mounting Seacocks, Ball Valve and Flowtech Valve.

Forespar Marine Plumbing SeriesCustom OEM Pro Series Valves Offer 1000s of Potential Configurations for your boat with an All-in-One Design

Pro Series Valves Offer Interchangeable Intake/Output Port Design Flexibility

Forespar’s popular Marelon® Pro Series™ valves are available in many custom configurations made to fit your exact specifications.

Use the Forespar Valve guide to determine the correct top, body and base components needed to fit your needs. Just select your desired top, body & base style from the choices inside this brochure, then enter the corresponding style number into the appropriate column of the product number sequence.

View the Forespar Marine Plumbing Pro Series Seacock range


Forespar Marine Ball Valve

Marelon® 850/849 Series valves

Available in sizes from 1/2” to 2”, and are designed as a direct replacement for in-line bronze valves.

These simple and rugged valves can accept a variety of attachments and are available in the traditional 3-bolt flanged seacock style.

Forespar Flange Plumbing ValveThey offer less flexibility and repairability than Forespar's Pro Series line, but can serve as an economical alternative when a simple, rugged valve is ideal for your installation.


View the Forespar Ball Valves 

View the Flange Mounting Seacocks


Flowtech Performance Valve

Forespar Flowtech Performance Plumbing ValveThere is also the Flowtech™ which is a free flow sea valve incorporating the valve body, thru-hull in the choice of all three sizes of hose pipe connections in one set. 


View the Flowtech Performance Valve


Often viewing the Forespar Marine Marelon® Catalogue can help as there are so many plumbing options.




Forespar Marelon Plumbing Valve Guide

Forespar Marelon Plumbing Valve Guide

A quick guide that is also available in PDF on the Pro Series