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VGF2 Pressure Balanced
VGF Flanged Globe Valves are
used for 2-position or modulating
control of steam, hot water, or
chilled water-glycol solutions up to
50 percent concentration in
heating, ventilation and air
conditioning (HVAC) systems. They
can be operated by ML6984/7984,
ML6420/6425, ML6421/7421
Electric Linear Actuators, MP953
Pneumatic Actuators, Modutrol™
Motors with Q5001 valve linkage, or
MN/MS Series Direct Coupled Actuators with Q5020 valve
linkage. Pressure-balanced models feature very high, low
leakage close-off ratings.
SPECIFICATIONS
Valve Type ............................................Globe Valve
Body Pattern ........................................Two-way
Flow characteristic ...............................Equal percentage or Linear
Connection Type ..................................Flanged
Valve Action ..........................................Step down to close
Controlled Medium ...............................Hot/Chilled Water with up to
50% Glycol; Steam
Leakage Rating ....................................0.01% of
C
v
Maximum Safe Operating Pressure .....175 psig (1206 kPa)
Maximum Differential Pressure Ratings (
Close-off) ..............................................175 psi (1206 kPa )
Fluid Temperature Range .....................20 F to 250 F, steam 335 F
(-7 C to 120 C, steam 180 C)
Actuation ..............................................Must be purchased separately
Stem Travel
2-1/2 and 3 in. valves ...........................3/4 in. (20 mm)
4 to 6 in. valves ....................................1-1/2 in. (39 mm)
Bonnet Size
2-1/2 and 3 in. valves ...........................1-3/8 in. (35 mm)
4 to 6 in. valves ....................................1-7/8 in. (47.6 mm)
Materials
(Body) ...................................................Cast Iron ASTM A126 Class B
(Stem) ...................................................Stainless Steel
(Seat) ....................................................Stainless Steel
(Cartridge) ............................................Stainless Steel
(Plug/Ball/Disc) .....................................Stainless Steel
(Packing) ..............................................Spring-loaded PTFE cone
rings
FEATURES
• ANSI Class 125 cast iron bodies with flanged end
connections.
• Equal percentage and linear flow characteristics
• Face-to-face flange dimensions per ANSI/ISA S75.03
standard.
• Sizes from 2-1/2 to 6 in.
• Stainless steel trim standard for long life span.
• Differential pressure of 175 psi, ANSI Class IV.
• Steam inlet pressure up to 125 psig and 353 F maximum
temperature.
• Self-adjusting packing.
• Accurate positioning with equal percentage and linear flow
characteristics to ensure precise temperature control.
• Universal bonnet for direct-coupled electric and pneumatic
actuators for easy mounting, or linkage coupled Modutrol™
Motors and MN/MS Series direct coupled actuators.
• Not suitable for combustible gasses.
DIMENSIONS DIAGRAM
M27603
C
A
B
D
STROKE Y
1
DOTTED LINE REPRESENTS ANSI 125 VALVE BONNET.
MODEL
NUMBER
DIMENSIONS, IN. (MM)
A B C E Y
2-WAY VALVES, ANSI CLASS 125. STEM DOWN TO CLOSE. EQUAL
PERCENTAGE OR LINEAR FLOW CHARACTERISTIC
VGF21_S25 10-7/8 (276) 4-3/8 (112) 7 (178) 3-1/2 (89) 13/16 (20)
VGF21_S30 11-3/4 (298) 6-3/8 (161) 7-1/2 (191)
VGF21_S40 13-7/8 (352) 5-7/8 (150) 9 (229) 5-1/4 (133) 1-1/2 (38)
VGF21_S50 15-3/4 (400) 6-3/16 (157) 10 (254)
VGF21_S60 17-3/4 (451) 6-3/16 (157) 11 (279)
2-WAY VALVES, ANSI CLASS 250. STEM DOWN TO CLOSE. EQUAL
PERCENTAGE FLOW CHARACTERISTIC
VGF22ES25 11-1/2 (292) 4-3/8 (112) 7-1/2 (191) 3-1/2 (89) 13/16 (20)
VGF22ES30 12-1/2 (318) 6-3/8 (161) 8-1/4 (210)
VGF22ES40 14-1/2 (368) 5-7/8 (150) 10 (254) 5-1/4 (133) 1-1/2 (38)
VGF22ES50 16-5/8 (422) 6-3/16 (157) 11 (279)
VGF22ES60 18-5/8 (473) 6-3/16 (157) 12-1/2 (318)
2-WAY VALVES, PRESSURE-BALANCED, ANSI CLASS 125. STEM DOWN TO
CLOSE. EQUAL PERCENTAGE OR LINEAR FLOW CHARACTERISTIC
VGF21_P25 10-7/8 (276) 4-3/16 (107) 7 (178) 3-1/2 (89) 13/16 (20)
VGF21_P30 11-3/4 (298) 5-7/8 (150) 7-1/2 (191)
VGF21_P40 13-7/8 (352) 5-7/8 (150) 9 (229) 5-1/4 (133) 1-1/2 (38)
VGF21_P50 15-3/4 (400) 6-1/8 (156) 10 (254)
VGF21_P60 17-3/4 (451) 6-1/8 (156) 11 (279)
Flanged Globe Valve
VGF2 Pressure Balanced
SUBMITTAL SHEETS