Selection Guide

F-26752-12 Copyright 2008 TAC All Rights Reserved. 11
Temperature/Pressure Ratings
See Figure-3 for temperature and pressure ratings of 2-way and 3-way valves. Ratings conform with published values and
disclaimer.
VB-7xxx-0-x-P and VB-9xxx-0-4-P (Cast Bronze Body)
Standards: Pressure to ANSI B16.15, Class 250, with 400 psi (2758 kPa) up to 150°F (65 °C), decreasing to 346 psi (2386 kPa)
at 281°F (138 °C).
Materials: Valve body is made of bronze, ASTM B584. Valve trim is 316 stainless steel stem, brass plug, metal-to-metal or
EPDM disc with PTFE packing parts and silicone packing grease.
VB-9xxx-0-5-P (Cast Iron Body with Flanged End Fittings)
Standards: Pressure to ANSI B16.1, Class 125, with 200 psi (1379 kPa) up to 150 °F (65 °C), decreasing to 169 psi (1165 kPa)
at 281°F (138 °C).
Materials: Valve body is made of cast iron, ASTM A126 Class B. Valve trim is 316 stainless steel stem, brass plug,
metal-to-metal or EPDM disc with PTFE packing parts and silicone packing grease.
Close-off Ratings
Nominal actuator close-off ratings are based on ANSI IV (0.01% leakage) with EPDM discs and PTFE discs in steam
applications. Metal-to-metal trim such as brass 3-way and high temperature stainless are designed for ANSI III (0.1% leakage).
Seat leakage for reduced port versions of metal-to-metal seats may match the full port versions, allowing up to 1% on the 0.4 Cv
plugs.
050
(345)
100
(689)
150
(1034)
200
(1379)
250
(1724)
300
(2068)
350
(2458)
400
(2758)
400 (204)
340 (171)
300 (149)
281 (138)
200 (93)
150 (65)
100 (38)
50 (10)
0
286
(1973)
321
(2218)
169
(1166)
165
(1138)
Limits for
VB-93X3-0-5
Limits for
VB-92X3-0-5
Limits for
VB-727X, VB-728X
Limits for
VB-725X, VB-726X
Limits for
VB-721X, VB-921X-0-4,
VB-722X, VB-922X-0-4,
VB-73XX, VB-93XX-0-4
Temperature—°F (°C)
Pressure—psig (kPa)
Figure-3 Temperature and Pressure Ratings for VB-7xxx and VB-9xxx Series Globe Valves.