The best hose connection system designed and built specifically for the marine industry.
New patented TURNCOUPLE® system connects and disconnects hoses easily
Strong, secure, lockable assembly simplifies installation and maintenance of hoses and related parts
Material exceeds ABYC strength standards for through-hull fittings
What does it do? The TURNCOUPLE® assembly allows hoses to be easily connected and disconnected. This compact fitting system simplifies the construction of hose systems, saves time and effort on maintenance, and facilitates emergency repairs. These patented fittings have been designed and built specifically for marine applications.
The TURNCOUPLE® assembly facilitates coping with many common maintenance problems on boats and ships, including:
- Easy installation and replacement of hoses
- Connection and disconnection of water, wastewater, bilge, lubrication and fuel lines for maintenance or emergency repair
- Checking and lubricating seacocks
- Removal and replacement of macerator, bilge or other pumps
- Allowing an emergency alternate raw water intake for the engine or other cooling system
- Letting macerator or other large utility pumps be used as emergency bilge pump by switching hoses
- Compliance with federal and state wastewater no-discharge regulations
How does it work? The TURNCOUPLE® assembly works like a turnbuckle: it tightens on two threaded adapters simultaneously by rotating a coupler between them. Unlike a turnbuckle, these threads are National Pipe Tapered, providing a firm mechanical seal when properly tightened. The assembly has been tested to hold up to 100 psi of water pressure, hand-tight.
Opposite the end that mates with the coupler, each adapter has a unique two-barb design which fits into marine hoses and provides a superior connection between adapter and hose with space for two hose clamps. The right adapter optionally comes with a threaded male end. Threaded components of the system are compatible with other commercially available NPT threaded fittings and devices of the same size.
Each fitting in the TURNCOUPLE® system has a perforated flange so the assembly can be locked together for additional security. The perforations accept a pin spanner for use in tight spaces where a wrench might not fit.
What is it made of? TURNCOUPLE® fittings are made of a strong, tough and highly impact-resistant material called Isoplast, from Dow. A 50-50 mix of Isoplast 202EZ and 202LFG40 is used to achieve a 20% long glass loading.
- The strength of this material exceeds by a large margin the ABYC standards for plastics used in seacocks and through-hulls.
- Isoplast does not absorb moisture as nylon does. It maintains its strength and shape in the presence of humidity, or immersed in water.
- Because of this dimensional stability, fittings made of Isoplast can be used with metal parts or equipment. In fact, Isoplast was developed as a metals replacement material.
- Isoplast is unaffected by saltwater, gasoline, diesel, fuel additives, clorox and many other chemicals.
- Visit Dow Chemical's web site for further information on Isoplast, a rigid thermopolyurethane product
How was it designed? Schedule 80 Standards were used to develop the dimensions of the TURNCOUPLE fittings. The threads are made according to ASTM specifications for NPT threads. The coupler and adapters are embossed with features that assist in connection and disconnection, and these features are raised enough that they can be felt even if the fittings are installed in a place that is difficult to see:
- An arrow, and the word OPEN, on the coupler, indicate the direction to rotate it to open or disconnect the assembly.
- Triangular marks on all flanges point to the beginning of the threads. The marks on the coupler and adapters are aligned at installation. This is significant because it assures that the coupler will close and seal on both adapters at the same time.
- A nut-shaped portion on each adapter allows for stabilizing with a wrench if necessary.
- Ribs on the coupler help to grip and turn it.
- "R" or "L" on the adapters and each end of the coupler indicate left- and right-hand threads. These must be matched up when installing.
What can a boater use it for? Do you plan to go cruising in a no-discharge zone? The TURNCOUPLE® is a perfect solution for making your head system legal. Using two TURNCOUPLE® assemblies, you can remove a section of hose from your overboard discharge line. This, combined with locking the seacock in the closed position and locking the Y-valve so that waste flows into the holding tank, makes your boat legal in protected waters without damaging hoses or seacocks.
A TURNCOUPLE® at each end of a long run of hose lets you remove and reinstall hoses easily for maintenance and repairs. It makes winterizing those long lines, plus engine water intake hoses and hot water heater hoses, simpler as well.
When did you lube that seacock last? A TURNCOUPLE® assembly simplifies access. If you have a female threaded seacock, simply install the TURNCOUPLE® nipple in the seacock, a left adapter in the hose from the seacock, and a coupler on the two adapters. When you do your regular seacock maintenance, you can get into the seacock easily by removing first the coupler and then the nipple.
What are the advantages of a TURNCOUPLE® over other fittings?
- It is designed specifically to work with marine hoses, fittings and components.
- The material is much stronger than pvc, cpvc, nylon, glass-reinforced nylon, and other plastics.
- It does not absorb water, expand, or lose its strength in the presence of moisture, so the assembly opens easily even if it has been sitting in water.
- It opens and closes easily without moving or damaging hoses - no more pulling hoses off of barbs.
- Its compact size and shape permit use in tight spaces. The same size union has a much larger diameter.
- The unique 2-barb, dual hose clamp design actually fits marine hoses - no more grinding off of barbs to get it to fit. Putting the two hose clamps between barbs rather than on top of barbs provides a superior connection.
- The system is designed to hold 35 psi hand-tight with pipe tape, over 100 psi snugged down with paste. In many applications, wrench-tightening is not necessary.
- The threaded components are compatible with most commercially available products of similar thread type. A careful analysis of products on the market shows a wide variety of diameters in threaded parts that are supposed to be the same size. These fittings have been carefully sized in the middle of the available range.
- The right adapters are available with a threaded rather than a barbed end, i.e., it is a nipple with a flange. This makes it possible to connect a TURNCOUPLE® assembly directly to other threaded parts or fittings, such as a threaded seacock, holding tank, macerator pump, etc.
- Perforated flanges allow locking with a cotter pin, seizing wire, wire tie, or lock - the assembly won't ever vibrate loose once it is locked.
The TURNCOUPLE® assembly is currently available in 1 1/2" diameter with NPT threads.
The adapters, barbed or threaded, are available separately, also in 1 1/2". They are by far the best non-metal marine fittings on the market.
The TURNCOUPLE® assembly has been designed and manufactured to precise specifications by a small Vermont company which specializes in high quality marine products.
For more current information about
the TURNCOUPLE® system, contact:
Good Turns, LLC
411 Walnut St #3309.
Green Cove Springs, FL 32043
802-877-1001
goodturns@vtlink.net
TurnCouple set
Threaded-end Adapter
Barbed-end Adapter
Coupler
Adapter in bronze fitting
Coupler Connected
Coupler Disconnected
For more current information about
the TURNCOUPLE® system, contact:
Good Turns, LLC
411 Walnut St #3309.
Green Cove Springs, FL 32043
802-877-1001
goodturns@vtlink.net
