Instructions / Assembly

ES-LF800M4QT
Engineering Specification
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LEAD FREE
*
Series LF800M4QT
Antisiphon
Pressure Vacuum Breakers
1
⁄2" – 2"
WARNING
Freeze sensor solely provides alerts about a possible freeze
event and cannot prevent a freeze event from occurring. User
action is required to prevent freeze conditions from causing
product and/or property damage.
!
Ser
ies LF800M4QT prevents backsiphonage of contaminated
water into a potable water supply. The device is ideally suitable
for irrigation systems, industrial process water systems, and
other continuous pressure piping system applications where the
water enters the equipment at or below its flood rim. The disc
float and check valve are suitable for temperatures up to 140°F.
The resilient sealing float O-ring and seal check disc are silicone
rubber which is resistant to heat, shock, and chemical attack.
The device features Lead Free* construction to comply with
Lead Free* installation requirements.
Series LF800M4QT includes a freeze sensor to indicate when
temperature nears the freezing point. The sensor relays a signal
that triggers notification to facility personnel to take preventive
action, thus reducing or eliminating equipment replacement or
repair.
NOTICE
An add-on connection kit is required to activate the freeze
sensor. Without the connection kit, the sensor is a passive
component that has no communication with any other device.
(For more information download RP/IS-FZ-800M4.)
NOTICE
Use of the freeze sensor does not replace the need to comply
with all required instructions, codes, and regulations related to
installation, operation, and maintenance of this product, including
the need to provide protection against a freeze event.
Watts is not responsible for the failure of alerts due to
connectivity or power issues.
LF800M4QT-FZ
Features
• Replaceable plastic seat
• Easy maintenance of internal parts
• Acetal bonnet acts as “freeze plug” to prevent body damage
• O-ring bonnet seal for less possibility of fouling
• Silicone seat disc for durability
• Test cocks positioned for easy testing and winterization
• Compact space saving design
• Standardly equipped with tee handle quarter turn ball valve
shutoffs (sizes ½" to 1") and with lever handles (sizes 1¼" to 2")
• No special tools required for servicing
• Lead Free* cast copper silicon alloy
• Sensor to indicate temperature at freeze threshold
• Freeze alerts feature activated with add-on sensor connection
kit, compatible with building/irrigation management systems
NOTICE
The information contained herein is not intended to replace the
full product installation and safety information available or the
experience of a trained product installer. You are required to
thoroughly read all installation instructions and product safety
information before beginning the installation of this product.
Inquire with governing authorities for local installation
requirements.
*The wetted surface of this product contacted by consumable water
contains less than 0.25% of lead by weight.
Watts product specifications in U.S. customary units and metric are approximate and are provided for reference only. For precise measurements,
please contact Watts Technical Service. Watts reserves the right to change or modify product design, construction, specifications, or materials with-
out prior notice and without incurring any obligation to make such changes and modifications on Watts products previously or subsequently sold.