ranger58sb
Guru
- Joined
- Aug 21, 2013
- Messages
- 7,697
- Location
- Annapolis
- Vessel Name
- Ranger
- Vessel Make
- 58' Sedan Bridge
I’m in the process of replacing our original water heater, and need to decide whether to keep our original hose fittings, or change to a push-to-connect system, or use brass nipples with hose clamps.
Our boat is plumbed with a mixture of Seaflex and Uniflex hose from Sea Tech (now Watts). The hose itself all appears to be the same stuff, SF-857 & SF-858, just with differences in the end fittings (either plastic at both ends, or brass at one end and plastic at the other).
www.greatlakesskipper.com
Sea Tech Marine Boat Water Hose SF-858 Uniflex 14 ft 1/2 Stems Red | eBay
The original ½” hose fittings at the water heater are female, brass on the incoming cold water inlet hose, plastic on the outgoing hot water outlet hose. Both female fittings had what appears to have been a cone seal. I have some (generic) replacement cone seals that appear to be the correct size…
The new water heater outlets are ¾” MNPT, and I’m adding FNPT flush valves (see pic, valves only loosely attached)… so I’ll need to manage genders and sizes along the way. Our hot water outlet hose comes up a bit short for the slightly different reach, but I can probably address that with an elbow if I can install one facing the correct direction. Our cold water inlet hose is a bit long, ditto probably an elbow solution.
But…
I could also just whack the existing connectors off the hose, and use either 1) push-to-connect fittings or 2) basic adapters either NPT threads on one end, hose nipples on the other, and decent hose clamps. If push-to-connect, there’s SharkBite, Watts’ AquaLock, John Guest, maybe others…
I’m inclined to first try the existing connectors with new cone seals… and if that works, call it done. OTOH, if one or the other two approaches are better, more secure, etc. I could probably do either with fewer adapters along the way…
Assumes the hose will actually work with push-to-connect options. Don’t know that for sure yet…
Thoughts?
-Chris
Our boat is plumbed with a mixture of Seaflex and Uniflex hose from Sea Tech (now Watts). The hose itself all appears to be the same stuff, SF-857 & SF-858, just with differences in the end fittings (either plastic at both ends, or brass at one end and plastic at the other).
Sea Tech Marine Boat Water Hose SF-857 | Uniflex 40 FT 1/2 Stems
Boat part number 1102780 is a new water hose from Sea Tech, part number SF-857 .
Sea Tech Marine Boat Water Hose SF-858 Uniflex 14 ft 1/2 Stems Red | eBay
The original ½” hose fittings at the water heater are female, brass on the incoming cold water inlet hose, plastic on the outgoing hot water outlet hose. Both female fittings had what appears to have been a cone seal. I have some (generic) replacement cone seals that appear to be the correct size…
The new water heater outlets are ¾” MNPT, and I’m adding FNPT flush valves (see pic, valves only loosely attached)… so I’ll need to manage genders and sizes along the way. Our hot water outlet hose comes up a bit short for the slightly different reach, but I can probably address that with an elbow if I can install one facing the correct direction. Our cold water inlet hose is a bit long, ditto probably an elbow solution.
But…
I could also just whack the existing connectors off the hose, and use either 1) push-to-connect fittings or 2) basic adapters either NPT threads on one end, hose nipples on the other, and decent hose clamps. If push-to-connect, there’s SharkBite, Watts’ AquaLock, John Guest, maybe others…
I’m inclined to first try the existing connectors with new cone seals… and if that works, call it done. OTOH, if one or the other two approaches are better, more secure, etc. I could probably do either with fewer adapters along the way…
Assumes the hose will actually work with push-to-connect options. Don’t know that for sure yet…
Thoughts?
-Chris
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