5. Slowly open the downstream block valve.
6. Slowly close the bypass valve, if used.
7. Check all connections for leaks.
note
the type VsX2 is not interchangeable
with the type VsX8 module. Each slam-
shut module requires a mating valve
body. Both slam-shut and body can be
replaced in the field. see parts list for
part numbers.
299H series adjustment
Keys are referenced in Figure 2. The only adjustment
on a 299H Series regulator is the reduced pressure
setting of the pilot control spring (key 32). Remove
the closing cap (key 29) and turn the adjusting screw
(key 36). Turning the adjusting screw clockwise into
the spring case increases the controlled or reduced
pressure setting. Turning the screw counterclockwise
decreases the reduced pressure setting. Always
tighten the locknut (key 35) and replace the closing
cap after making adjustments.
note
It is recommended that the 299H series
regulators use a complete matching
casing set that includes an upper case,
a lower case and spring case in the
old blank configuration or new swirl
configuration. However, these parts are
interchangeable with each other.
Taking Out of Service (Shutdown)
!
WarnIng
to avoid personal injury resulting from
sudden release of pressure, isolate
the regulator from all pressure before
attempting disassembly.
the seal and warning tag contain
important safety information, if removed
be sure to reattach before startup.
BoDy sIzE
BoDy MatErIal anD EnD ConnECtIon stylE
Dn
In.
Cast Iron
(For types 299H and 299Hr only)
Ductile Iron
steel
(For types 299H and 299Hr only)
- - - -
1-1/4
NPT
- - - -
- - - -
- - - -
1-1/2
NPT
NPT
NPT
50
2
NPT and CL125 FF
(1)
flanged
NPT, CL125 FF, CL250 RF flanged and
PN 10/16 flanged
NPT and CL150 RF flanged
1. This flange is available with a face-to-face dimension of 191 mm / 7.5 in. or 254 mm / 10 in.
Table 1.
Body Sizes and End Connection Styles
outlEt (Control) PrEssurE rangE
tyPE
mbar
In. w.c.
299H
299Hr, 299HV and 299HVr
9 to 15
(1)
12 to 22
(1)
17 to 50
(1)
40 to 99
(1)
3.5 to 6
(1)
5 to 9
(1)
7 to 20
(1)
16 to 40
(1)
X
X
X
X
X
X
X
X
69 mbar to 0.22 bar
0.19 to 0.41 bar
0.35 to 1.1 bar
0.97 to 2.4 bar
2.1 to 4.1 bar
1 to 3.25 psig
2.75 to 6 psig
5 to 16 psig
14 to 35 psig
30 to 60 psig
X
X
X
X
X
X
X
X
- - - -
- - - -
1. Use a pilot supply regulator if actual inlet pressure varies more than ±1.4 bar / 20 psi and the published accuracy is required.
Table 2.
Outlet Pressure Ranges
Parts list
299H Series Regulator
Key Description
1
Lower Casing, Types 299H, 299HV and 299HVR
2
Upper Casing, Type 299HV
3
Closing Cap
4
Spring Seat Delrin
®
(standard)
Steel (High vibration or engine applications - used with key 93)
5
Adjustment Nut
6
Closing Spring
7
Pressure Equalization Spring
8* Diaphragm
9* O-ring
10 Diaphragm Post
11 Pusher Post
12 Orifice
13* Disk
14* O-ring
15* O-ring
16 Valve Stem Assembly
17 Valve Body
18 Cap Screw
19 Elbow (3 required for Cast Iron or Steel bodies; 2 required for
Ductile Iron Bodies)
*Recommended spare part.
Delrin
®
is a mark owned by E.I. du Pont de Nemours and Co.
299H Series
3
