Valves & Fittings for Boats

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The company Maestrini srl was founded by Giulio Maestrini in 1964 in Quarona, Italy. They produce high-quality, standardized fitting pieces and accessories for assembly technology (fittings) made of bronze alloy, brass CR, brass MS58 or stainless steel. The high quality standard in production meets the requirements of ISO 9001:2008, Lloyd Register, and is also partly certified by the DVGW (German Association of Gas and Water).
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All TruDesign products are made from the latest high-impact polymer resins and are suitable for use above and below the waterline. Based in Auckland, New Zealand, the company is ISO 9001 certified and has more than 40 years of experience in manufacturing plastic injection moulds.
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Simply perfect inside and out. Andersen sailboat winches are the epitome of exceptional functionality and quality. For over 60 years, Andersen has been constantly striving to meet its customers' demands, while continuing to develop new technological standards. To date, Andersen stands for design, reliability, durability and perfection.
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Logo of VETUS
VETUS is a developer, manufacturer and commercial enterprise for marine engines, generators and technical equipment on board of pleasure craft and small commercial vessels. The company was founded in 1964 by Dutchman, William Henry den Ouden.
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Logo of JABSCO
Jabsco manufactures products for recreational and marine use. These include pumps and filters, toilets, sanitary items, fresh water and sewage systems, as well as equipment. Jabsco also invented the flexible impeller pump over 60 years ago. Need a new toilet lid for your Jabsco on-board toilet or the check valve on your Jabsco on-board toilet is defective? Use our spare parts finder for the right replacement part for your Jabsco on-board toilet! Spare parts finder for Jabsco toilets
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Find perfect fitting connectors and valves for your diesel and water lines on board. Whether you're looking for a high-quality seacock or want to replace old fittings, in our online shop for valves and fittings, you will find a wide range of affordable offers for your on-board project. We have everything, from plastic through-hulls to matching seals for check valves, ball valves and 2-way valves for your boat, and a wide range of fittings from Truedesign, Mastrini and Elvström. Find exactly the part you are looking for here! Learn more about Valves & Fittings...
Valves & Fittings

Valves & Fittings

- Connecting everything on board -

Threaded pipes are commonly used in gas and water technical installations. The parameters are given in inches. The diameter of the pipe is also used.

Pipe thread inch Outer-Ø mm
1/8" 9.73 mm
1/4" 13.16 mm
3/8" 16.66 mm
1/2" 20.95 mm
5/8" 22.91 mm
3/4" 26.44 mm
7/8" 30.20 mm
1" 33.25 mm
1 1/8" 37.90 mm
1 1/4" 41.91 mm
1 3/8" 44.32 mm
1 1/2" 47.80 mm
1 3/4" 53.74 mm
2" 59.61 mm

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Bob M. on 18.04.2024

I input the wrong address in my order and DHL was unable to deliver. Tjade Diercks immediately resent the order and I had it the next day!

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Petr L. on 16.04.2024


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Spyros C. on 15.04.2024

Good support Clearly defined and excellent service Well done to your team