Installation, Operating and Maintenance Instructions
Installation, Operating and Maintenance Instructions
®
®
NIBCO INC.
WORLD HEADQUARTERS
WEB: www.nibco.com
1516 MIDDLEBURY STREET
ELKHART, IN 46516-4740
USA
DOMESTIC CUSTOMER SERVICE
PHONE: 800.234.0227
FAX: 800.234.0557
TECHNICAL SERVICE
PHONE: 888.446.4226
FAX: 888.336.4226
INTERNATIONAL OFFICE
PHONE: +1/574.295.3221
FAX: +1/574.295.3455
MV951X001.109
Cast Iron ‘Y’ Strainer Connected to LD2000 or N200 Butterfly Valves
1
2
3
4
About NIBCO Strainer Kits
• The components in this kit were selected for use in HVAC applications.
• The kit should be fitted between ASME/ANSI B16.1 Class 125 flanges. In
accordance with ASME B16.5 & 5.3.5, and ASME B16.42 & 6.2.3, a higher class
flange shall be flat faced.
• The kit shall not be installed in a system that exceeds the lowest rated component of
the kit.
• The kit should not be installed in a predominately copper piping system. See
NIBCO Technical Bulletin -
Dielectric Products Relative to Electrolysis and Galvanic
Corrosion
, NTB-0714-01 for additional detail as necessary.
• The strainer may be mounted in horizontal, vertical or inclined pipework. When
installed in horizontal pipework the orientation of the body should be such that the
cover is immediately below. At low level pipe runs, the gap between the ground
and the strainer must be sufficient to allow for the withdrawal of the strainer screen.
In vertical or inclined pipework the flow direction shall be downwards only.
• This kit does not included the fasteners, nor the strainer end flange gasket needed
to connect the kit to the piping system.
• As supplied, the kit components are joined with ASTM A307 Grade B or SAE J429
Grade 2 bolting material.
• Should your kitted components be affixed with studs, the studs are also specified as
ASTM A307 Grade B or SAE J429 Grade 2. Supplied nuts are ASTM A563
Grade B or SAE J995 Grade 2. Always check for correct bolting for your system.
• For best performance and reliability, the water in your HVAC system shall be
properly treated for chemical and mineral composition.
Bolt Tightening Patterns
Crisscross tightening pattern for LD2000 series butterfly valves
6
1
5
3
7
2
4
8
1
24
9
28
5
16
32
20
4
21
12
25
29
8
13
17
2
18 14
23
10
27
6
31
15
19
3
22
11
26
7
30
VALVE
Figure 1
Crisscross with cross-over tightening pattern for N200 series butterfly valves
Figure 2
1
Only qualified personnel should undertake the procedures outlined in this document.
NIBCO INC., its agents, representatives and employees assumes no liability for the
use of these procedures. These procedures are offered as suggestions only.
2
Recommended fastener tightening torque tightening torques are made without warranty.
Install must verify proper fasteners for the application.
Torque data assumes clean, non-lubricated fasteners.
