Victaulic FireLock 751 Series Replacement Instructions Manual

REPLACEMENT KIT INSTRUCTIONS
Replacing the Clapper Seal or Clapper Assembly for Series 751, 756,
758, 764, 768/768N, and 769/769N FireLock
• Series 751, 756, 758, 764, 768/768N, and 769/769N FireLock
that are designed and installed in accordance with current, applicable National Fire Protection Association (NFPA 13, 13D, 13R, etc.)
standards, or equivalent standards, and in accordance with applicable building and fire codes. These standards and codes contain
important information regarding protection of systems from freezing temperatures, corrosion, mechanical damage, etc.
• These installation instructions are intended for an experienced, trained installer. The installer shall understand the use of this product and
why it was specified for the particular application.
• The installer shall understand common industry safety standards and potential consequences of improper product installation.
Failure to follow installation requirements and local and national codes and standards could compromise system integrity or cause system
failure, resulting in death or serious personal injury and property damage.
CONTENTS OF CLAPPER SEAL KIT
This kit may contain three clapper seals. It is important to determine the appropriate clapper seal for the valve being serviced. THESE SEALS ARE
NOT INTERCHANGEABLE. If the clapper currently contains a seal that looks like "A" below, it MUST be replaced with the exact seal provided in this
kit. Refer to the notes below for details.
CLAPPER SEAL "A"
Seal Washer
Seal Ring
CLAPPER SEAL "B"
Seal Washer
CLAPPER SEAL "C"
REV_F
WARNING
• Read and understand all instructions before attempting to install any Victaulic products.
• Always verify that the piping system has been completely depressurized and drained
immediately prior to installation, removal, adjustment, or maintenance of any Victaulic
products.
• Wear safety glasses, hardhat, and foot protection.
Failure to follow these instructions could result in death or serious personal injury and property
damage.
™ Fire Protection Valves shall be used only in fire protection systems
Clapper seal "A" contains BOTH a white seal washer and a seal ring
(instructions start on page 3).
This is the only seal design that can be used in the clapper for all sizes of
Series 756, 758, 764, 768/768N, and 769/769N valves.
In addition, this seal design is used in the clapper for 1 1/2 – 3-inch/
48.3 – 88.9-mm and 8-inch/219.1-mm sizes of Series 751 valves.
Double-Ribbed
Seat
Clapper Seal "C" is a solid design and DOES NOT contain a white seal
washer and a seal ring (instructions start on page 5).
For Series 751 Alarm Check Valves in North America: Seal "C" is designed for
4 – 6-inch/114.3 – 168.3-mm (including 165.1-mm) valve sizes.
For Series 751 Alarm Check Valve Stations in Europe: Seal "C" is designed for
3 – 6-inch/88.9 – 168.3-mm (including 165.1-mm) valve sizes. The design for
Series 751 FireLock European Alarm Check Valve Stations must be specified
upon ordering (these valves have a cover plate identification tag that contains
VdS and CE markings).
™ Fire Protection Valves
Clapper Seal "B" contains ONLY a white seal
washer (instructions start on page 3).
This is the only seal design that can be used in
the clapper for Series 751 valves in 4 – 6-inch/
114.3 – 168.3-mm (including 165.1-mm) sizes
with a manufacture date of September 2018 or
after.
In addition, this seal design is used exclusively
with valve bodies that contain a double-ribbed
seat, as shown to the left.
I-30
I-30