Emerson YARWAY 9100 ARC Series, Installation, Operation And Maintenance Instructions

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5
2 [50]
7
/
16
- 20 30 - 35 [41 - 48]
3 [80] ½ - 13 45 - 50 [61 - 68]
4 [100] ⅝ - 11 90 - 110 [122 - 149]
6 [150] ¾ - 10 160 - 200 [217 - 271]
8 [200] 1 - 8 305 - 355 [414 - 481]
2 [50] 1⅛ - 18 N-06 40 - 60 [54 - 81]
3 [80] 1¾ - 18 N-09 150 - 190 [203 - 258]
4 [100] 2⅜ - 18 N-12 250 - 300 [339 - 407]
6 [150] 2¾ - 18 N-14 300 - 350 [407 - 474]
8 [200] 4⅜ - 12 AN-22 480 - 550 [651 - 746]
YARWAY 9100 SERIES ARC
®
VALVE
INSTALLATION, OPERATION AND MAINTENANCE INSTRUCTIONS
REASSEMBLY – ALL CLASSES
2" to 8" [50 to 200 mm] valve sizes
1. All parts must be clean prior to reassembly.
2. Torque the upper guide bushing nut to the following values (Table 2) Do not lubricate.
TABLE 2 – UPPER GUIDE BUSHING
Valve Size Nut Size Torque
in. [mm] in. ft/lb [N•m]
3. Install new O-rings on the bypass bushing (use O-ring lube).
4.
Important: The hole in the bypass bushing must line up with the bypass port. Use a soft metal
rod to maintain the hole location when torquing the bearing nut.
5. Torque the bearing nut to the bypassing bushing using the torque values listed in Table 3 (use
anti-seize on threads). Bend the lockwasher tab in the slot of the locknut.
LUBRICANTS
Use the following lubricants or their equivalents:
Anti-seize – Loctite 116737 (food grade anti-sieze).
O-ring – Silicone lubricant or liquid soap.
TABLE 3 – BYPASS BUSHING NUT
Valve Size Nut Size Torque
in. [mm] in. ft/lb [N•m]
6. Lap the disc to the body. First use 180 grit (medium coarse) and repeat with 360 grit (fine). The
finished surface should be 360 degrees and a minimum of ½ the available seat width. Clean
thoroughly after each lapping operation.
7. Install the snubber seal assembly in the groove on the disc assembly using O-ring lube. (O-ring
first, followed by Glyd ring.) Heat Glyd ring 140 to 212°F [60 to 100°C] water prior to installation.
Resize ring with hose clamp and shim stock after seal is in groove. Allow to cool 10-20 minutes
to resize.
8. Install the stem/disc assembly into the valve body. Place the spring on the disc. Place bonnet
seal O-ring into the insert O-ring groove. Lower the bonnet, with matchmarks aligned, into
place using care not to damage the snubber seal.
9. Coat studs with anti-seize lubricant prior to assembly. Torque to the values in Table 4.