Waterworks Universal Three Way Diverter Valve without Shutoff for Pressure Balance Shower Systems User Manual
Installation guidelines

 
 
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UNIVERSAL 
Three Way Diverter Valve For Pressure Balance Shower Systems 
Installation Guidelines
Page 1 of 2
Rev - 05
 
 
6.16.2014
These guidelines have been prepared for the professional contractor to aid in the installation of: 
UNIVERSAL THREE WAY DIVERTER VALVE FOR PRESSURE BALANCE SHOWER SYSTEMS 
STYLE No. GUDV65, GU65DV (UK). 
All dimensions are based on original specification and are subject to change and variation. 
Please consult your Design Associate for current specifications. 
STYLE No. GUDV65†
SPECIFICATIONS:
Fitting Hole Diameter
Ш2 1/2" * (Ш 63.5mm)
Inlet Connection Size & 
Type: 
1/2" Female NPT†
Outlet Connection Size & 
Type: 
1/2" Female NPT†
Recommended Water 
Pressure: 
45 psi (3 Bar)
Unrestricted Maximum 
Flow Rate: 
16.9gpm @ 45 psi 
(64 L/min @ 3 Bar) 
Valve Material:
Ceramic
Water Pressure:
20 psi MIN - 80psi MAX 
(1.4 Bar Min - 5.5 Bar Max) 
* Ø2 1/2" hole is required for servicing the valve 
 
† UK Style No. GU65DV supplied with 4 BSP Adapters, 
assembly required. 
 
REQUIRED PLUMBING DETAILS: 
Universal Three Way Pressure Balance Diverter Valve 
Trim 
 STYLE 
No.
UNDV3P
Universal Pressure Balance Valve 
 
STYLE No. GUPB81 or,
Universal Pressure Balance with Diverter Valve 
 
STYLE No. GUPB87
 
IMPORTANT: 
¾ To ensure this product is installed properly, you must 
read and follow these guidelines. The owner/user of 
this product must keep this information for future 
reference. 
 
¾ This product can only be used with either the Universal 
Pressure Balance Valve (GUPB81) or the Universal 
Pressure Balance with Diverter Valve (GUPB87). This 
product requires a compatible wall valve trim and trim 
plate. ALL PRODUCTS SOLD SEPARATELY. 
 
¾ This product, the pressure balance valve (GUPB81 or
GUPB87) and the associated trims must be on-site 
prior to rough-in. This allows the installer to visualize 
the installation. 
¾ Inspect this product to assure you have all the parts
required for proper installation. 
 
¾ Refer to the specification and assembly drawings
attached. Product is sold partially assembled but 
shown fully disassembled for illustrative and service 
purposes only. 
¾ This product must be installed by a professional
licensed contractor. Be sure your installation conforms 
to all federal, state, and local codes. In the State of 
Massachusetts, all installations must comply with the 
rules and regulations set forth within 248 CMR. 
 
¾ Check incoming water pressure.
FUNCTION: 
 
¾ The Universal Pressure Balance Valves (GUPB81 and 
GUPB87) control on/off and mix hot and cold water. 
Mixed water flows out at a fixed volume to the 
diverter valve (GUDV65) which has 3 positions/outlets 
to direct water flow to a maximum of 3 devices: 
Shower head, handshower and secondary shower 
head. Water cannot flow out of the devices 
simultaneously (i.e. out of the shower head and 
handshower together). The GUDV65 can only be 
connected to the top outlet port of the GUPB81 and 
GUPB87. The GUPB87 features an integrated diverter 
for use with a tub spout that does not have a built in 
diverter. 
 
ROUGH-IN: 
¾ Valve rough-in depth is measured from the centerline 
of the inlets to the surface of the finished wall and 
varies depending on the trim being used. 
 
ROUGH-IN CHART
GUPB81/87 GUDV65
Trim Min
Max
Min
Max
.25, Flyte, 
Henry, Opus, 
R.W. Atlas 
2 3/8"
(60mm)
2 7/8"
(73mm)
3 1/8"
(79mm)
3 5/8"
(92mm)
Formwork
2 1/4"
(57mm)
2 5/8"
(67mm)
3"
(76mm)
3 3/8"
(86mm)
Ludlow
2 1/8"
(54mm)
2 7/8"
(73mm)
2 7/8"
(73mm)
3 5/8"
(92mm)
All Other
1 7/8"
(48mm)
2 7/8"
(73mm)
2 5/8"
(67mm)
3 5/8"
(92mm)
DIVERTER
VALVE
PRESSURE BALANCE
VALVE
FINISHED WALL
CENTER OF
INLET
CENTER OF
INLET
ROUGH-IN
DEPTH
ROUGH-IN
DEPTH
