Model: 45490-1000
JABSCO Y-VALVE
FEATURES
• Chemical and corrosion resistant polypropylene and
stainless steel construction
• Selector lever can be padlocked (lock not included)
and/or sealed in either position
• Ports can be rotated so discharge plumbing can be
routed away in parallel, at 90˚ or in opposite direc-
tions, or either up or down without disassembly
• Valve is supplied with both 1-1/2
"
(38 mm) ports
(fitted) and extra 1
"
(25 mm) straight inlet port
• Optional shaft extension allows valve to be mounted
through a bulkhead up to 1-3/4
"
thick with only the
selector handle exposed
• Self cleaning design provides trouble free operation
• Molded in flow direction indicator arrows
• Easy access to three sturdy mounting feet for quick
and simple installation
• Easy access to valve – by removal of just three hex
head machine screws, top cover and diverter
assembly lift away from the body
APPLICATION
The Jabsco Y-Valve is designed to provide flexibility of
onboard waste management by diverting waste either
into an onboard holding tank or directly overboard where
legal to do so. Check local and Federal regulations to
determine where direct overboard discharge of untreated
waste is permitted. No overboard discharge of untreated
waste is allowed within three miles of shore.
Some near shore areas and inland areas are designated
as “No-Discharge Zones” where the discharge of any
onboard waste, even treated waste is strictly prohibited.
Many of these areas require a waste retention system
that can be positively secured in an onboard retention
mode. The Jabsco Y- Valve accommodates this
requirement by providing the ability to add a padlock that
secures the selector handle in either direction to ensure
waste is directed to an onboard holding tank. T h e
Y-Valve may also be used to direct waste from a holding
tank to an onboard waste discharge pump for holding
tank evacuation or, alternatively, to a waste deck plate
for removal by a shoreside pump-out facility.
The Y- Valve may also be used in a bilge pumping system
to select between two separate bilge pickups in
different bilge compartments providing for evacuation of
two separate bilge areas with only one bilge pump.
INSTALLATION
(WASTE DIVERTER VALVE)
Waste system plumbing should be kept as short and
straight as possible. There should be no dips or low
spots in the plumbing that would create water traps
where waste can collect and solidify. Ideally, the highest
point of a waste plumbing system should be as close to
the toilet as possible, with the remainder of the system
running down hill from that point to take advantage of
g r a v i t y. Other than the one way valve located in the
discharge port of most toilets, check valves should not
be used in waste system plumbing as they can create
points of possible blockage. If plumbed to an onboard
holding tank, the tank must be properly vented. If
plumbed to an overboard discharge through hull fitting
and seacock, the discharge through hull fitting should be
positioned well aft of and ideally lower than any intake
through hulls.
Choose a location for the Y-Valve that offers easy access
to the selector handle for valve operation. The optional
45500-1000* handle extension kit may be used to mount
the valve assembly on one side of a bulkhead with the
selector handle on the opposite side. Determine the best
routing of plumbing to the inlet and discharge ports. The
discharge port fittings may be rotated 360˚ allowing the
discharge hoses to be routed away from the valve in
parallel (on the same axis as the inlet port), at 90˚ to each
o t h e r
or in opposite directions to each other.
Alternatively, each port can be rotated to point either up
or down.
If desired, the 1
"
(25 mm) barbed port (included with the
valve) can be installed in the inlet port to simplify plumbing
when the valve is used with macerating type toilets having
1
"
(25 mm) discharge ports. To accomplish this, simply
*
Y- Valves manufactured prior to 2002 with blue handles
require handle extension Model 45489-1000
Optional
Shaft
Extension
45500-1000
