Series hy42 (with box), For wall thickness: 2, Features – Watts HY42 User Manual
Page 2: Standards, Pressure, Approvals, Specifications, Rough-in dimensions

Non-Freeze Wall Hydrants
with Backflow Preventer
and Mounting Box
For Wall Thickness: 2
1
⁄
2
" - 18" (65 - 450mm)
Series HY42 is an automatic draining, freezeless wall hydrant
with vacuum breaker-backflow preventer protection to prevent
backsiphonage enclosed in a flush mounting wall box. It is
designed to blend with modern architecture for installation on
restaurants, schools, office buildings, churches, apartments,
motels, stores, shopping centers and industrial buildings.
Features
• Threaded inlet connection
3
⁄
4
" (20mm) female
or 1" (25mm) male I.P.S.
• Tamper resistant Tee key operates hydrant
• Permanent type brass valve body
• Replaceable EPDM seat surface
• One piece valve plunger which accurately controls both
the flow and drainage with a minimum number of turns
• Casing consists of rugged brass pipe
• Exterior finish of chrome on brass
• Box door hinges in the up position, locks in the open
position allowing hose free access to either side
• Exterior finish on box and door of chrome-plated brass
Standards
ASSE Standard 1019
Pressure
Maximum Operating Pressure: 125psi (8.6 bar)
Approvals
ASSE
Listed by IAPMO
Specifications
Wall hydrant shall be exposed-type Watts automatic draining
Series HY42 with vacuum breaker-backflow preventer protec-
tion,
3
⁄
4
" (20mm) hose thread nozzle, one piece valve plunger
to control both flow and drain functions, rugged brass pipe
construction, locking chrome-plated brass box and hydrant.
Mounting box locks in the up position allowing hose access to
either side. Loose Tee key to be furnished with each hydrant.
Complies with ASSE 1019.
hY42 Box
series hY42
Front View with Box
hY42
Top View
Front View
Cut-out View
6.25"
5.25"
Wall
Thickness
Add 2" to wall
thickness for
recessbox
model
Wall ThiCkness
WeighT
in
mm
lbs.
kgs.
HY42-025
2
1
⁄
2
64
3.5
1.6
HY42-04
4
102
4.5
2.0
HY42-06
6
152
4.9
2.2
HY42-08
8
203
5.3
2.4
HY42-10
10
254
5.7
2.6
HY42-12
12
305
6.1
2.8
HY42-14
14
356
6.5
2.9
HY42-16
16
406
6.9
3.1
HY42-18
18
457
7.3
3.3
HY42 Box
5.0
2.3
HY42 Tee-Key
1.0
0.5
HY42 Wall Clamp
2.0
0.9
Series HY42 (with Box)
ES-HY42 1018
© 2010 Watts
USA: 815 Chestnut St., No. Andover, MA 01845-6098; www.watts.com
Canada: 5435 North Service Rd., Burlington, ONT. L7L 5H7; www.wattscanada.ca
A Watts Water Technologies Company
Rough-in Dimensions