Selection Guide

F-26752-12 Copyright 2008 TAC All Rights Reserved. 21
Table-12 Specifications for 2-1/2” to 6” Vx-9xxx Linked Globe Valve Assemblies.
Linked Globe Valve Assemblies
2-Way 3-Way
Applications Chilled or Hot Water, or Steam Chilled or Hot Water
Type of End Fitting Flanged Flanged
Size
2-1/2 in. through 6 in.
65 mm through 150 mm
2-1/2 in. through 6 in.
65 mm through 150 mm
Action Stem Up Open or Stem Up Closed Mixing
Valve Assembly Series Vx-92xx-5xx-5-P Vx-931x-5xx-5-P
Flow Type Equal Percentage
a
a
For a detailed description of the flow, see page 9 (2-way valves) or page 10 (3-way valves).
Linear
a
Valve Body
Materials
Body Cast Iron Cast Iron
Seat Bronze Bronze
Stem Stainless Steel Stainless Steel
Plug Bronze Bronze
Packing Spring-loaded TFE Spring-loaded TFE
Disc Composite —
Linkage
Materials
Housing
Corrosion-Resistant Steel Corrosion-Resistant Steel
Rack & Pinion Steel Steel
ANSI Pressure Class (Figure-3)
125 psig (862 kPa), 200 psig (1379 kPa)
below 150 °F (66 °C)
b
b
Do not apply the above pressure rating to the piping system.
125 psig (862 kPa), 200 psig (1379 kPa)
below 150 °F (66 °C)
b
Rangeability 75:1 Exceeds 500:1
Seat Leakage ANSI Class IV (.01%) ANSI Class III (0.1%)
STEAM
Inlet Pressure — Maximum 35 psig (241 kPa) —
Fluid Temperature — Maximum 281 °F (138 °C) —
Allowable Differential Pressure
c
c
Maximum recommended differential pressure. Do not exceed the recommended differential pressure (pressure drop) or the integrity of valve parts may be
affected. Exceeding the maximum recommended differential pressure voids the product warranty.
20 psi (138 kPa) —
WATER
Fluid Temperature — Minimum 40 °F (4 °C) 40 °F (4 °C)
Fluid Temperature — Maximum 281 °F (138 °C) 300 °F (149 °C)
Allowable Differential Pressure
c
35 psi (241 kPa) Max. for Normal Lifespan
(refer to "Cavitation Limitations on Valve
Pressure Drop" on page 15)
35 psi (241 kPa) Max. for Normal Lifespan
(refer to "Cavitation Limitations on Valve
Pressure Drop" on page 15)