Home » Public Forums » GMCnet » Do you close gate valve with macerator pump?
| Do you close gate valve with macerator pump? [message #366875] |
Mon, 20 September 2021 11:46  |
Ken Shaffer
Messages: 89
Registered: September 2017
Location: Marion Iowa
Karma: -1
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Those of you with macerator pump... Do you close the gate valve out of the back of the tank after using your macerator? Just curious what others do. I have used my macerator for three years now and LOVE IT! I used to close the gate valve each time but forgot it a few times and wondered..... is it necessary to even close it.
Ken Shaffer
Marion Iowa
73 Canyon Lands, 455, Micro-level, Alum radiator, Alcoa wheels, Lenzi hubs/bearings, Howell EFI/EBL, Rostra Cruise, Custom interior
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| Re: Do you close gate valve with macerator pump? [message #366907 is a reply to message #366875] |
Tue, 21 September 2021 12:30  |
TR 1
Messages: 348
Registered: August 2015
Location: DFW
Karma: -7
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The PO installed the macerator on our coach, so not having seen how it was plumbed I don't have any insight into whether to close or not...
However, like you I try to close it, but sometimes forget, and it seems just fine....
Mark S. '73 Painted Desert,
Manny 1 Ton Front End,
Howell Injection,
Leigh Harrison 4bag and Rear Brakes,
Fort Worth, TX
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| Re: Do you close gate valve with macerator pump? [message #366910 is a reply to message #366875] |
Tue, 21 September 2021 16:35 |
lqqkatjon
Messages: 2324
Registered: October 2010
Location: St. Cloud, MN
Karma: 5
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your gate valve is one of those things, use it or loose it. Leave it open, and it may not close.
I have had some residual gunk out of the macerator hose on long drives with the valve open. Nothing to really worry about, but probably better to shut the gate valve then have the hydraulic action of the black water beating on the pump.
Jon Roche
75 palm beach
EBL EFI, manny headers, Micro Level, rebuilt most of coach now.
St. Cloud, MN
http://lqqkatjon.blogspot.com/
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| [GMCnet] Re: Do you close gate valve with macerator pump? [message #366912 is a reply to message #366875] |
Tue, 21 September 2021 17:38 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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The reason you want a valve ahead of the macerator is as insurance for
that nearly inevitable day when the macerator fails. If you've got
contents in the black tank when that day arrives, a closed gate valve will
be a LOT more fun to work with than will having to remove the macerator
with all that stinky stuff backed up by it.
SO, if you want to be spared that agony, keep that valve exercised!
Ken H.
On Tue, Sep 21, 2021 at 4:03 PM Ken Shaffer wrote:
> Those of you with macerator pump... Do you close the gate valve out of the
> back of the tank after using your macerator? Just curious what others do.
> I have used my macerator for three years now and LOVE IT! I used to close
> the gate valve each time but forgot it a few times and wondered..... is it
> necessary to even close it.
>
> --
> Ken Shaffer
> Marion Iowa
> 73 Canyon Lands, 455, Micro-level, Alum radiator, Alcoa wheels, Lenzi
> hubs/bearings, Howell EFI/EBL, Rostra Cruise, Custom interior
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] Re: Do you close gate valve with macerator pump? [message #366914 is a reply to message #366912] |
Tue, 21 September 2021 21:47 |
Carl S.
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
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I close mine, but I think it leaks a little. The hose is separate and I keep the outlet capped, so it doesn't really matter.
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
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| [GMCnet] Re: Do you close gate valve with macerator pump? [message #366917 is a reply to message #366914] |
Wed, 22 September 2021 08:50 |
Ken Shaffer
Messages: 89
Registered: September 2017
Location: Marion Iowa
Karma: -1
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Member |
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I cap the end of the hose as well. I didnt think about the "use it or
loose it aspect"....
I think I will try to keep it working. Ken, thanks for your
descriptive explaination. I will try to stay out of the stank!
On Tue, Sep 21, 2021 at 9:47 PM Carl Stouffer wrote:
> I close mine, but I think it leaks a little. The hose is separate and I
> keep the outlet capped, so it doesn't really matter.
> --
> Carl Stouffer
> '75 ex Palm Beach
> Tucson, AZ.
> Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive,
> Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American
> Eagles,
> Solar battery charging. GMCSJ and GMCMI member
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
Ken Shaffer
Marion Iowa
73 Canyon Lands, 455, Micro-level, Alum radiator, Alcoa wheels, Lenzi hubs/bearings, Howell EFI/EBL, Rostra Cruise, Custom interior
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| [GMCnet] Re: Do you close gate valve with macerator pump? [message #366923 is a reply to message #366917] |
Wed, 22 September 2021 12:03 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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If you do not close the valve each time, one might find that the gunk will
not allow the valvet to close all the way when your needing to
On Wed, Sep 22, 2021 at 6:50 AM Ken Shaffer wrote:
> I cap the end of the hose as well. I didnt think about the "use it or
> loose it aspect"....
> I think I will try to keep it working. Ken, thanks for your
> descriptive explaination. I will try to stay out of the stank!
>
>
>
> On Tue, Sep 21, 2021 at 9:47 PM Carl Stouffer wrote:
>
>> I close mine, but I think it leaks a little. The hose is separate and I
>> keep the outlet capped, so it doesn't really matter.
>> --
>> Carl Stouffer
>> '75 ex Palm Beach
>> Tucson, AZ.
>> Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive,
>> Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American
>> Eagles,
>> Solar battery charging. GMCSJ and GMCMI member
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
--
Jim Kanomata ASE
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.gmcrvparts.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: Do you close gate valve with macerator pump? [message #366927 is a reply to message #366875] |
Wed, 22 September 2021 19:51 |
rjw
Messages: 697
Registered: September 2005
Karma: 4
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Senior Member |
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Ken Shaffer wrote on Mon, 20 September 2021 12:46Those of you with macerator pump... Do you close the gate valve out of the back of the tank after using your macerator? Just curious what others do. I have used my macerator for three years now and LOVE IT! I used to close the gate valve each time but forgot it a few times and wondered..... is it necessary to even close it.
My macerator (best thing since sliced bread) has 2 gate valves. One between the black tank and the macerator and one after that is connected to the original large backup dump tube. The former is always open and the later is always closed unless in an emergency (macerator has failed) and we need to dump the old fashioned way. In over 20 years we had one macerator failure and it was nice to be able to dump via the slinky we carry.
Richard
76 Palm Beach
SE Michigan
www.PalmBeachGMC.com
Roller Cam 455, TBI+EBL, 3.42 FD, 4 Bag, Macerator, Lenzi (brakes, vacuum system, front end stuff), Manny Tranny, vacuum step, Tankless + OEM water heaters.
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| [GMCnet] Re: Do you close gate valve with macerator pump? [message #366930 is a reply to message #366927] |
Wed, 22 September 2021 21:42 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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These valves are designed to stay closed when not being used as particles
will fill the U shaped seal and even the sharp plate cannot overcome them
every time when particles start to dry.
On Wed, Sep 22, 2021 at 5:51 PM RJW wrote:
> Ken Shaffer wrote on Mon, 20 September 2021 12:46
>> Those of you with macerator pump... Do you close the gate valve out of
> the back of the tank after using your macerator? Just curious what others
>> do. I have used my macerator for three years now and LOVE IT! I used
> to close the gate valve each time but forgot it a few times and
> wondered.....
>> is it necessary to even close it.
>
> My macerator (best thing since sliced bread) has 2 gate valves. One
> between the black tank and the macerator and one after that is connected to
> the
> original large backup dump tube. The former is always open and the later
> is always closed unless in an emergency (macerator has failed) and we need
> to dump the old fashioned way. In over 20 years we had one macerator
> failure and it was nice to be able to dump via the slinky we carry.
> --
> Richard
> 76 Palm Beach
> SE Michigan
> www.PalmBeachGMC.com
>
>
> Roller Cam 455, TBI+EBL, 3.42 FD, 4 Bag, Macerator, Lenzi (brakes, vacuum
> system, front end stuff), Manny Tranny, vacuum step, Tankless + OEM water
> heaters.
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
>
--
Jim Kanomata ASE
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.gmcrvparts.com
1-800-752-7502
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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