Valve Body Assembly

Valve Body Assembly
Sales Manual Section 170
PRODUCT SPECIFICATION "FA"
(For CONTROL VALVE Service)
Valve Body Assembly
Style "FA"
FEATURES
•
•
•
•
Sizes 2-1/2" thru 4" Direct Acting
3/4" thru 4" Reverse Acting
Double-seated
Semi-Balanced
Top and Bottom Guided
SPECIFICATIONS
Type: ..............................Double-seated, semi-balanced
Action: ....................Direct-acting (closes on downward
stem movement). Reverse-acting
(opens on downward stem movement)
Connections: .................3/4" thru 1-1/2" - Brass unions
2" thru 4" - 125 lb. Flange - Cast iron
150 lb. Flange - Bronze
Materials:
Body ............................................................See Table
Stem ....................................... Highly finished 316 SS
(Monel on Monel trim valves)
Trim .............................................................See Table
Packing ....... Teflon* chevrons (spring loaded) - D/A
Rubber U-cup - R/A
Capacity .............. See Cv ratings in Dimensions table
Maximum Valve Design Rating:
(Supply Pressure and Allowable Pressure Drop)
Bronze Bodies:
Pressure/Temperature: ............... 200 psi @ 100° F
125 psi @ 400° F
Pressure Drop:.......................... Bronze trim, 50 psi
Monel trim, 125 psi
Cast Iron Bodies:
Pressure/Temperature:............... 175 psi @ 100° F
125 psi @ 350° F
Pressure Drop: ..........................Bronze trim, 50 psi
Stainless Steel trim, 125 psi
* Teflon is a registered trade name of Dupont Company
Reverse-Acting Type Illustrated
Stem Connection: ............................ Quick Disconnect
Available Actuators:................... VC-230A, VC-231A
Maximum Leakage (Factory Test)
3/4" thru 2" - 0.5% of rated valve capacity at 50psi
2-1/2" thru 4" - 0.5% of rated valve capacity at
20psi
Flow Characteristics: ..........................Quick-Opening
Available Body and Available Body and Trim Materials:
Valve
Size,
In.
3/4"
1"
1-1/4"
1-1/2"
2"
2-1/2"
3"
4"
Direct Acting
Bronze Body
Cast Iron Body
BZ Trim Monel Trim SS Trim
BZ Trim
X
X
X
1
Reverse Acting
Bronze Body
Cast Iron Body
BZ Trim Monel Trim SS Trim
BZ Trim
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
DIMENSIONS:
3/4" to 1-1/2" Sizes
All Dimensions in Inches (mm)
Valve size
3/4
9.3
Cv
5/32 (4.0)
Valve Travel
Unbalanced Area
.07(.45)
Sq. In. (CM²)
5-5/8 (143)
Dim. A
Dim. B (D.A.)
4-3/8 (111)
Dim. B (RA.)
Dim. C (D.A.)
2-1/16 (52)
Dim. C (R.A.)
2" to 4" Sizes
1
17.6
3/16 (4.8)
1-1/4
22.5
7/32 (5.6)
1
30.4
1/4 (6.4)
2
59.3
5/16 (7.9)
2-1/2
82.5
3/8 (9.5)
3
130
7/16 (11.1)
4
226
9/16 (14.3)
.11(.71)
.11(.71)
.15 (.97)
.38 (2.45)
.50 (3.23)
.58 (3.74)
.78 (5.03)
7-1/4 (184) 7-13/16 (198) 8-1/2 (216)
5-7/8 (149) 5-7/8 (149) 6-1/2 (165)
2-13/16 (71) 2-13/16 (71) 3-1/8 (79)
7 (178)
7-3/4 (197)
8-5/8 (219)
10-3/8 (264)
6-15/16 (176)
8 (203)
8-11/16 (221) 10-13/16 (275)
8 (203)
8-13/32 (214) 9-1/8 (232)
11-7/32 (285)
3-13/16 (97)
4-3/8 (111)
4-3/4 (121)
5-13/16 (148)
3-1/8 (79)
3-5/8 (92)
3-5/16 (100)
4-7/8 (124)
Q-4128 (10/04)
2
Printed in U.S.A.
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