Technical Specifications

28000 Series Varipak Control Valves | 9
Dimensions – inches (mm)
Standard Varipak (Stainless Steel) Bar Stock Body
(For Non-Castable Material)
Provide a removal clearance of 5.5 inches (140 mm)
Optional
1/2" NPT
3/4" NPT
1" NPT
10.24
(260)
4.13
(105)
Handwheel (optional)
11.10
(282)
12.80
(325)
1.30
(33)
8.56
(217.5)
4.02
(102)
2 holes tapped
5/16" – 18 UNC
depth 11 (7/16")
1.10
(28)
1.77
(45)
Rated C
V
Range Critical Flow Factor F
L
Temperature Range Materials
0.60 to 0.050
(trim No. 3 to 6)
0.98
-20°F to +660°F
(-29°C to +350°C)
Seat
ASTM A 564 Gr. 630 Condition H900
Type 17-4 PH St. St.
Plug
One piece from solid Stellite
No. 12
or Equivalent or ASTM A 276 type
440 C St. St.
Other Parts Standard Construction: see page 6
Varilog
*
Anti-Cavitation Varipak
28000 MS Series
The Varilog multi-stage trim design for the Varipak control valve provides
unmatched anti-cavitation performance in low flow applications.
By reducing erosion and vibrations, this design helps minimize failure that is often
associated with conventional single-seated valves. The Varilog trim is available
with the standard Varipak body designs in either the flanged or flangeless
configurations.
Figure 7: Varilog Trim Subassembly
Specific Characteristics