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New Whale Gulper Pump on Shower drain |
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Captain Cook 
Admiral 
Joined: 23 May 2006 Location: Denmark Status: Offline Points: 1245 |
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 Posted: 06 January 2023 at 10:16 |
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" the water in the sink issue" I mounted a one-way valve under the sink - the model with a gravity induced movement. The model with a spring does not work here.  Edited by Captain Cook - 07 January 2023 at 10:01 |
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Freya H400 #27 (2006),2-cabin, 40HP 3JH4E, 3-blade Flexofold, Aries LiftUp Windvane, Exturn 300, Jefa DD1,Simrad NX40,Icom M603(VHF)+M802(SSB)
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H8jer
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Joined: 14 September 2010 Location: Denmark Status: Offline Points: 1503 |
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Posted: 06 January 2023 at 17:47 |
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Hi Again
When changing the Shower Drain pump I now remember that there was not much room to work with. There might be a huge difference between the 400 and the 370 here. The clearance between the outer and inner hull is not much. I don't think the filter could drop into the hidden voids on a 370. Because of the tight space, the Whale gulper/diaprahm pump suggested by Captain Cook is perhaps an easier fit than the Jabsco pump. It took me some time to adjust the best orientation. But as show on the pictures the Whale has to sit lower than the Jabsco to leave room for the hoses. Captain Cook - Because you mentioned that the Spring-version is not usable -then a TruDesign One-Value is perhaps not an option? The TruDesign has a stainless Spring and a pressure loss of 3.8psi. Could you kindly confirm if this valve is of the right gravity One-valve type? /H8jer
Edited by H8jer - 06 January 2023 at 17:49 |
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Hanse 370#487 30HP 3-cabin
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Captain Cook
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Joined: 23 May 2006 Location: Denmark Status: Offline Points: 1245 |
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Posted: 06 January 2023 at 18:42 |
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H8jer: The non-return valves are normally used in pressurized systems. This means, that a version with a spring needs the water-pressure to press open the valve. This kind of pressure is not available when water is slowly leaving the sink. The valve in my photo I found in my workshop. It is also manufactured for use in pressurized systems, but the mechanism is just a closing plate hung in a little bolt of which you can see the end in the top left hand side on the photo. Therefore if it is mounted right, the valve stays open (by gravity) so water from the sink can pass. When the drain pump starts to pump pressurized water against the arrow in the valve, the valve closes, and the grey water from the drain is then routed down to the seacock. The non-return valve must be mounted on the hose just under the sink, with the arrow pointing down, and with the Y-piece underneath the valve ( with hoses going to shower-drain and seacock). There may be a better solution, but this was what I could find in my workshop, and it functions. I do not believe that the Trudesign valve will work. Update: Just drew a few lines on the valve to make things clearer.
Edited by Captain Cook - 07 January 2023 at 10:04 |
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Freya H400 #27 (2006),2-cabin, 40HP 3JH4E, 3-blade Flexofold, Aries LiftUp Windvane, Exturn 300, Jefa DD1,Simrad NX40,Icom M603(VHF)+M802(SSB)
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Wild
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Joined: 18 March 2010 Location: Turkey-Greece Status: Offline Points: 937 |
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Posted: 07 January 2023 at 10:01 |
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[QUOTE=samuel]
I have a 2003 version of the 311. I have changed to a gulper just before covid. I removed the old pump , threw away the filter & just re conncted with a section of new hose. What I did do was fit a Hose lock fitting in the connection. I then added a 12 ft length of hose which is coiled in the engine bay. When i want to hoover up water anywhere in the boat I just disconnect the shower & hook on the hose & can move it about as required. In the end of the hose I have a 12 inch length of 8mm copper pipe so I can insert it through a hole in the cabin floor & suck up any water in the bilge that the main pump will not remove without lifting the floor boards. In our boat 545/2010 there’s a factory installed Jabsco Water Puppy self priming pump 23680-4003 with approx 12 meters long 19mm hose with Jabsco anti return valve and at the end a 50cm long tube to pump out all the bilges compartments. I can even reach the bow thruster compartment the dinghy garage and the anchor locker to suck op water there.👍 Why Hanse don’t do this standard in all the models I don’t know!!
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Wild and Wet
Belgium 545e#268 |
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landlocked
Rear Admiral 
Joined: 12 April 2005 Location: Canada Status: Offline Points: 568 |
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Posted: 07 January 2023 at 20:21 |
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Thanks H8jer and Captain Cook for your photos and links to alternative shower pumps. This is a future project for my H400. I will also look for some kind of check valve arrangement that can work for a sink.
Regarding the discussion of pressure tanks, another alternative is a flow-rate controller that controls the pump based on water pressure. I bought this one from Jabsco many years ago and it has been working fine for me https://www.westmarine.com/jabsco-smooth-flow-water-pump-controller-31777-0000-8719080.html . Another nice feature of this device is that it will shut off the pump if the flow is continuing uninterrupted for more than 20 minutes so if someone leaves a tap on or you spring a leak you won't drain the tank. Cycling the power will reset this feature. It is pretty compact and there is room to fit it next to the freshwater pump. Sorry I don't have a photo of the installation, I'll take one in the spring.
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"Kerkyra" 400e #042
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Rock
Commadore 
Joined: 19 September 2014 Location: Netherlands Status: Offline Points: 404 |
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Posted: 07 January 2023 at 21:20 |
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Very interesting solution, with the gravity based one-way valve
Never thought of. You learn something everyday ! Thanks kjeld
Edited by Rock - 07 January 2023 at 21:21 |
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Hanse 400e "M-square2" #0241
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H8jer
Admiral
Joined: 14 September 2010 Location: Denmark Status: Offline Points: 1503 |
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Posted: 08 January 2023 at 11:44 |
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Hi Again
Just went to the boat today to charge the lead batteries and also to run the dehumidifier (absorbtion-type) Then I had some time to take pictures of my setup. Remember that I have already stated it would perhaps be easier to install the Whale-type, because I think the picture shows that it was difficult to fit the Jabsco Gulper/Diaphram pump (50880-1000):  The accumulator tank for the fresh-water is a .65 Litre (not 1L as stated earlier) it's part-no is 30573-0003. It is placed under the sink to the right.  Here is shown the TruDesign Truhull valves, where the left one has a Y-joint for the Sink and the Shower drain. I would not try to fit an extra truhull dedicated to the Shower drain.  From the Y-Joint the Hose is bend in a curve up to sink. So a To-Do project this season would be to fit the Non-Return Valve suggested by Captain Cook - somewhere on that hose.  /H8jer
Edited by H8jer - 08 January 2023 at 11:46 |
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Hanse 370#487 30HP 3-cabin
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Arcadia
Admiral
Joined: 27 November 2017 Location: Sag Harbor, USA Status: Offline Points: 1112 |
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Posted: 08 January 2023 at 13:34 |
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Hi Captain Cook, great idea to use that non return, or check valve as we call it. I would, however, suggest that a lower mounting near the waterline would provide a bit more downward head pressure for the sink drain. This should make for faster draining and less restriction. Is there a reason you chose mounting near the sink? Cheers.
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Leon / ARCADIA
2018 Hanse 588 Sag Harbor, NY |
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H8jer
Admiral
Joined: 14 September 2010 Location: Denmark Status: Offline Points: 1503 |
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Posted: 08 January 2023 at 13:40 |
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Perhaps I can answer on behalf of Captain Cook.
Because the hose is bend - there is only a limited position to fit the valve because it needs to be vertical for gravity to work. From the Y-joint to the underside sink is only 25-45cm
Edited by H8jer - 08 January 2023 at 13:41 |
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Hanse 370#487 30HP 3-cabin
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Wild
Vice Admiral
Joined: 18 March 2010 Location: Turkey-Greece Status: Offline Points: 937 |
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Posted: 08 January 2023 at 13:46 |
This type you have to place always horizontal to let the gravity work. Why not the Jabsco non return valve? There’s no spring inside and you can placed in any direction( vertical and horizontal )for 19mm 25mm and 38mm hose.
 Edited by Wild - 08 January 2023 at 13:47 |
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Wild and Wet
Belgium 545e#268 |
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Captain Cook wrote: