will a PHII with a household size bowl fit in a '78 cat 30? also, can the holding tank vent and the vented loop vent be installing high in the hull right below the deck or should it be installed in the side of the bulkhead. if the holding tank is installed in the bow could i vent the tank through the port or starbord running light holes which are located high on the hull right below the deck at the bow of the boat? i am planning to relocate the lights. rather than make a new hole in the boat i was wondering if these would be high enough to act as the vents. after reading peggy's book i was thinking i could run 2-1" vents for the holding tank. one to each light hole?
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will a PHII with a household size bowl fit in a '78 cat 30? also, can the holding tank vent and the vented loop vent be installing high in the hull right below the deck or should it be installed in the side of the bulkhead. if the holding tank is installed in the bow could i vent the tank through the port or starbord running light holes which are located high on the hull right below the deck at the bow of the boat? i am planning to relocate the lights. rather than make a new hole in the boat i was wondering if these would be high enough to act as the vents. after reading peggy's book i was thinking i could run 2-1" vents for the holding tank. one to each light hole?
Maybe, not sure what you mean, and yes 
You'll have to measure your space to know whether the household bowl on any toilet will fit it. The dimensions for both sizes of the PH II are on the Raritan website here: http://www.raritaneng.com/products/toilets/manual/ph_2.html Keep in mind that, because the hole is in the middle of the bowl, you'll need additional space behind the bowl as well as in front and to the side....so you'll need room to mount the base an inch or two forward of your current compact's base. I'm not sure what you mean by this: "can the holding tank vent and the vented loop vent be installing high in the hull right below the deck or should it be installed in the side of the bulkhead." The vented loop and tank vent have nothing to do with each other. Any vented loop MUST be mounted to be at least 6-8" above waterline at any angle of heel, which on most sailboats would put it close to the deck. You'll need a vented loop in the head intake--between the pump and the bowl as shown in the drawing in the installation instructions...and if you plan to plumb the tank be able to dump it at sea, you'll need another one in the tank discharge between the pump and the thru-hull. There should be no loop in the tank vent...it needs to be as short, straight and horizontal--but still high enough to keep it out of the water at maximum heel--as possible. So venting off the bow end of the tank to one of the holes now used by your running lights would work. If you go with a 1" vent that's no longer than 2-3', one vent line should be all you need.
You'll have to measure your space to know whether the household bowl on any toilet will fit it. The dimensions for both sizes of the PH II are on the Raritan website here: http://www.raritaneng.com/products/toilets/manual/ph_2.html Keep in mind that, because the hole is in the middle of the bowl, you'll need additional space behind the bowl as well as in front and to the side....so you'll need room to mount the base an inch or two forward of your current compact's base. I'm not sure what you mean by this: "can the holding tank vent and the vented loop vent be installing high in the hull right below the deck or should it be installed in the side of the bulkhead." The vented loop and tank vent have nothing to do with each other. Any vented loop MUST be mounted to be at least 6-8" above waterline at any angle of heel, which on most sailboats would put it close to the deck. You'll need a vented loop in the head intake--between the pump and the bowl as shown in the drawing in the installation instructions...and if you plan to plumb the tank be able to dump it at sea, you'll need another one in the tank discharge between the pump and the thru-hull. There should be no loop in the tank vent...it needs to be as short, straight and horizontal--but still high enough to keep it out of the water at maximum heel--as possible. So venting off the bow end of the tank to one of the holes now used by your running lights would work. If you go with a 1" vent that's no longer than 2-3', one vent line should be all you need.
Maybe, not sure what you mean, and yes
You'll have to measure your space to know whether the household bowl on any toilet will fit it. The dimensions for both sizes of the PH II are on the Raritan website here: http://www.raritaneng.com/products/toilets/manual/ph_2.html Keep in mind that, because the hole is in the middle of the bowl, you'll need additional space behind the bowl as well as in front and to the side....so you'll need room to mount the base an inch or two forward of your current compact's base. I'm not sure what you mean by this: "can the holding tank vent and the vented loop vent be installing high in the hull right below the deck or should it be installed in the side of the bulkhead." The vented loop and tank vent have nothing to do with each other. Any vented loop MUST be mounted to be at least 6-8" above waterline at any angle of heel, which on most sailboats would put it close to the deck. You'll need a vented loop in the head intake--between the pump and the bowl as shown in the drawing in the installation instructions...and if you plan to plumb the tank be able to dump it at sea, you'll need another one in the tank discharge between the pump and the thru-hull. There should be no loop in the tank vent...it needs to be as short, straight and horizontal--but still high enough to keep it out of the water at maximum heel--as possible. So venting off the bow end of the tank to one of the holes now used by your running lights would work. If you go with a 1" vent that's no longer than 2-3', one vent line should be all you need.
You'll have to measure your space to know whether the household bowl on any toilet will fit it. The dimensions for both sizes of the PH II are on the Raritan website here: http://www.raritaneng.com/products/toilets/manual/ph_2.html Keep in mind that, because the hole is in the middle of the bowl, you'll need additional space behind the bowl as well as in front and to the side....so you'll need room to mount the base an inch or two forward of your current compact's base. I'm not sure what you mean by this: "can the holding tank vent and the vented loop vent be installing high in the hull right below the deck or should it be installed in the side of the bulkhead." The vented loop and tank vent have nothing to do with each other. Any vented loop MUST be mounted to be at least 6-8" above waterline at any angle of heel, which on most sailboats would put it close to the deck. You'll need a vented loop in the head intake--between the pump and the bowl as shown in the drawing in the installation instructions...and if you plan to plumb the tank be able to dump it at sea, you'll need another one in the tank discharge between the pump and the thru-hull. There should be no loop in the tank vent...it needs to be as short, straight and horizontal--but still high enough to keep it out of the water at maximum heel--as possible. So venting off the bow end of the tank to one of the holes now used by your running lights would work. If you go with a 1" vent that's no longer than 2-3', one vent line should be all you need.
thanks for the help
looking at the raritan diagram, and if i understand what you are saying, i need two vents. one between the pump & the bowl, which is a vent loop and one in the holding tank, which is a straight shot. i was thinking of only installing a holding tank and no overboard discharge. if i only install a holding tank, am i correct in saying i can eliminate the vent loop in the line from the head to the holding tank as shown in the rartian figure 1A. and if i can eliminate the vent loop from the head to the holding tank, should i still install a loop or should the pipe be as short as possible. i thought your book said the shorter the better but if i can get it pretty short and straight, when the tank is full or heeled, what prevents backflow back to the toilet? another question. i think i'm going to get the tank from ronco. should the discharge line from the head to the tank be installed in the top of the tank. i would think if it was installed in the side, when it was full or heeled over, you could get some backflow into the toilet? sorry for all the questions but the boat i just bought had a head that didn't work and looks like it just discharged overboard with no vents.
looking at the raritan diagram, and if i understand what you are saying, i need two vents. one between the pump & the bowl, which is a vent loop and one in the holding tank, which is a straight shot. i was thinking of only installing a holding tank and no overboard discharge. if i only install a holding tank, am i correct in saying i can eliminate the vent loop in the line from the head to the holding tank as shown in the rartian figure 1A. and if i can eliminate the vent loop from the head to the holding tank, should i still install a loop or should the pipe be as short as possible. i thought your book said the shorter the better but if i can get it pretty short and straight, when the tank is full or heeled, what prevents backflow back to the toilet? another question. i think i'm going to get the tank from ronco. should the discharge line from the head to the tank be installed in the top of the tank. i would think if it was installed in the side, when it was full or heeled over, you could get some backflow into the toilet? sorry for all the questions but the boat i just bought had a head that didn't work and looks like it just discharged overboard with no vents.
thanks for the help
looking at the raritan diagram, and if i understand what you are saying, i need two vents. one between the pump & the bowl, which is a vent loop and one in the holding tank, which is a straight shot. i was thinking of only installing a holding tank and no overboard discharge. if i only install a holding tank, am i correct in saying i can eliminate the vent loop in the line from the head to the holding tank as shown in the rartian figure 1A. and if i can eliminate the vent loop from the head to the holding tank, should i still install a loop or should the pipe be as short as possible. i thought your book said the shorter the better but if i can get it pretty short and straight, when the tank is full or heeled, what prevents backflow back to the toilet? another question. i think i'm going to get the tank from ronco. should the discharge line from the head to the tank be installed in the top of the tank. i would think if it was installed in the side, when it was full or heeled over, you could get some backflow into the toilet? sorry for all the questions but the boat i just bought had a head that didn't work and looks like it just discharged overboard with no vents.
looking at the raritan diagram, and if i understand what you are saying, i need two vents. one between the pump & the bowl, which is a vent loop and one in the holding tank, which is a straight shot. i was thinking of only installing a holding tank and no overboard discharge. if i only install a holding tank, am i correct in saying i can eliminate the vent loop in the line from the head to the holding tank as shown in the rartian figure 1A. and if i can eliminate the vent loop from the head to the holding tank, should i still install a loop or should the pipe be as short as possible. i thought your book said the shorter the better but if i can get it pretty short and straight, when the tank is full or heeled, what prevents backflow back to the toilet? another question. i think i'm going to get the tank from ronco. should the discharge line from the head to the tank be installed in the top of the tank. i would think if it was installed in the side, when it was full or heeled over, you could get some backflow into the toilet? sorry for all the questions but the boat i just bought had a head that didn't work and looks like it just discharged overboard with no vents.
You're confusing vented loop with vent line
Only tanks--water, fuel and waste--need vent lines. A VENT is a line to the outside of the hull that provides an escape for air displaced by incoming liquid and a source of air to replace liquids as they're pulled out of the tank. A vented loop is a siphon break installed in a line connected to a below-waterline thru-hull...a loop that has an air valve in it that only allows air to be pulled INTO the line to break a siphon...which is why you need one in the toilet intake--to break the siphon started by priming the pump. It should not be necessary to add any vent LINE to a vented loop. So if you intend to set up your system for everything to go into a tank that can only be emptied via pumpout, the tank will have to be vented (a vent line), but you will need only one vented loop (siphon break) in the head intake. As for your tank fittings locations: The top is the ideal location for all of 'em, including the discharge (specify a pickup tube inside the tank for that one)...but you'll need at least 5" clearance above the tank to put 'em there. If you don't have that much they'll have to go on a vertical surface. Whether on the top or the side, the inlet and vent fitting should be closest to the centerline of the boat--away from the hull. The vent fitting should be on the bow end of the tank, either on top or at the top of the vertical surface closest to the centerline. This will prevent waste from spilling out the vent or running back toward the toilet when the boat is heeled...so you shouldn't need any loop in the line from the toilet to the tank. If you need more detailed help than is practical in a discussion forum, or you'd like for me to look at a drawing of your proposed installation, email me...I'm in all the owner directories.
Only tanks--water, fuel and waste--need vent lines. A VENT is a line to the outside of the hull that provides an escape for air displaced by incoming liquid and a source of air to replace liquids as they're pulled out of the tank. A vented loop is a siphon break installed in a line connected to a below-waterline thru-hull...a loop that has an air valve in it that only allows air to be pulled INTO the line to break a siphon...which is why you need one in the toilet intake--to break the siphon started by priming the pump. It should not be necessary to add any vent LINE to a vented loop. So if you intend to set up your system for everything to go into a tank that can only be emptied via pumpout, the tank will have to be vented (a vent line), but you will need only one vented loop (siphon break) in the head intake. As for your tank fittings locations: The top is the ideal location for all of 'em, including the discharge (specify a pickup tube inside the tank for that one)...but you'll need at least 5" clearance above the tank to put 'em there. If you don't have that much they'll have to go on a vertical surface. Whether on the top or the side, the inlet and vent fitting should be closest to the centerline of the boat--away from the hull. The vent fitting should be on the bow end of the tank, either on top or at the top of the vertical surface closest to the centerline. This will prevent waste from spilling out the vent or running back toward the toilet when the boat is heeled...so you shouldn't need any loop in the line from the toilet to the tank. If you need more detailed help than is practical in a discussion forum, or you'd like for me to look at a drawing of your proposed installation, email me...I'm in all the owner directories.
You're confusing vented loop with vent line
Only tanks--water, fuel and waste--need vent lines. A VENT is a line to the outside of the hull that provides an escape for air displaced by incoming liquid and a source of air to replace liquids as they're pulled out of the tank. A vented loop is a siphon break installed in a line connected to a below-waterline thru-hull...a loop that has an air valve in it that only allows air to be pulled INTO the line to break a siphon...which is why you need one in the toilet intake--to break the siphon started by priming the pump. It should not be necessary to add any vent LINE to a vented loop. So if you intend to set up your system for everything to go into a tank that can only be emptied via pumpout, the tank will have to be vented (a vent line), but you will need only one vented loop (siphon break) in the head intake. As for your tank fittings locations: The top is the ideal location for all of 'em, including the discharge (specify a pickup tube inside the tank for that one)...but you'll need at least 5" clearance above the tank to put 'em there. If you don't have that much they'll have to go on a vertical surface. Whether on the top or the side, the inlet and vent fitting should be closest to the centerline of the boat--away from the hull. The vent fitting should be on the bow end of the tank, either on top or at the top of the vertical surface closest to the centerline. This will prevent waste from spilling out the vent or running back toward the toilet when the boat is heeled...so you shouldn't need any loop in the line from the toilet to the tank. If you need more detailed help than is practical in a discussion forum, or you'd like for me to look at a drawing of your proposed installation, email me...I'm in all the owner directories.
Only tanks--water, fuel and waste--need vent lines. A VENT is a line to the outside of the hull that provides an escape for air displaced by incoming liquid and a source of air to replace liquids as they're pulled out of the tank. A vented loop is a siphon break installed in a line connected to a below-waterline thru-hull...a loop that has an air valve in it that only allows air to be pulled INTO the line to break a siphon...which is why you need one in the toilet intake--to break the siphon started by priming the pump. It should not be necessary to add any vent LINE to a vented loop. So if you intend to set up your system for everything to go into a tank that can only be emptied via pumpout, the tank will have to be vented (a vent line), but you will need only one vented loop (siphon break) in the head intake. As for your tank fittings locations: The top is the ideal location for all of 'em, including the discharge (specify a pickup tube inside the tank for that one)...but you'll need at least 5" clearance above the tank to put 'em there. If you don't have that much they'll have to go on a vertical surface. Whether on the top or the side, the inlet and vent fitting should be closest to the centerline of the boat--away from the hull. The vent fitting should be on the bow end of the tank, either on top or at the top of the vertical surface closest to the centerline. This will prevent waste from spilling out the vent or running back toward the toilet when the boat is heeled...so you shouldn't need any loop in the line from the toilet to the tank. If you need more detailed help than is practical in a discussion forum, or you'd like for me to look at a drawing of your proposed installation, email me...I'm in all the owner directories.
thanks for clarifying
the vent/vented loop issue. i was thinking you needed to vent the vented loop. i think i have it all figured out now. i'm going to try to lay it all out this weekend. if i have any questions, i'll make a diagram and email it to you. thanks for your help.
the vent/vented loop issue. i was thinking you needed to vent the vented loop. i think i have it all figured out now. i'm going to try to lay it all out this weekend. if i have any questions, i'll make a diagram and email it to you. thanks for your help.
thanks for clarifying
the vent/vented loop issue. i was thinking you needed to vent the vented loop. i think i have it all figured out now. i'm going to try to lay it all out this weekend. if i have any questions, i'll make a diagram and email it to you. thanks for your help.
the vent/vented loop issue. i was thinking you needed to vent the vented loop. i think i have it all figured out now. i'm going to try to lay it all out this weekend. if i have any questions, i'll make a diagram and email it to you. thanks for your help.
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