I-795/906
/ Installation-Ready
™
Knife Gate Valve
/ Installation and Maintenance Instructions
NOTICE
A locking pin is provided to assist with Lockout/Tagout procedures
during installation and maintenance. Ensure that the pin is
removed before attempting to place the valve into service.
IMPACT WRENCH USAGE GUIDELINES
WARNING
• It is important to tighten the nuts evenly by alternating sides
until metal-to-metal c ontact occurs at the bolt pads.
• DO NOT continue to tighten the nuts after the visual installation
guidelines for the product are achieved.
Failure to follow these instructions could cause gasket pinching and
product damage, resulting in joint failure, serious personal injury,
and property damage.
Due to the speed of assembly when using an impact wrench, the
installer should take extra care to ensure that nuts are tightened evenly
by alternating sides until proper assembly is complete . Always refer to
the specific product installation instructions for complete installation
requirements .
Impact wrenches do not provide the installer with direct “wrench feel” or
torque to judge nut tightness . Since some impact wrenches are capable
of high output, it is important to develop a familiarity with the impact
wrench to avoid damaging or fracturing the bolts or the bolt pads during
installation .
DO NOT continue to tighten the nuts after the visual
installation guidelines are achieved.
If the battery is drained or if the impact wrench is under-powered, a new
impact wrench or a new battery pack must be used to ensure that the
visual installation guidelines for the product are achieved .
Perform trial assemblies with the impact wrench and check the
assemblies with socket or torque wrenches to help determine the
capability of the impact wrench . Using the same method, periodically
check additional nuts throughout the system installation .
For safe and proper use of impact wrenches, always refer to the impact
wrench manufacturer’s operating instructions . In addition, verify that
proper impact grade sockets are being used for product installation .
WARNING
Failure to follow instructions for tightening product hardware could
result in:
• Bolt fractures
• Damaged or broken bolt pads or product fractures
• Joint leakage
Series 795 Helpful Information
Valve
Size
Spacer
Bolt Size
Spacer Bolt
Socket
inches/mm
Coupling
Nut
Size
Coupling Nut
Deep-Well Socket
inches/mm
3
3/8" - 16 UNC x 2"
9/16
1/2" - 13 Heavy Hex
7/8
14
19
4
3/8" - 16 UNC x 2"
9/16
1/2" - 13 Heavy Hex
7/8
14
19
6
3/8" - 16 UNC x 3"
9/16
5/8" - 11 Heavy Hex
1 1/16
14
27
8
3/8" - 16 UNC x 3"
9/16
5/8" - 11 Heavy Hex
1 1/16
14
27
10
1/2" - 13 UNC x 3.5"
3/4
7/8" - 9 Heavy Hex
1 7/16
19
36
12
1/2" - 13 UNC x 3.5"
3/4
7/8" - 9 Heavy Hex
1 7/16
19
36
I-795/906_17
REV_D
