4
299H Series
To adjust the Underpressure Trip Spring:
1. Adjust the underpressure trip spring back to its
minimum compression.
2. Backpressure the unit with the desired
underpressure trip pressure.
3. Increase the underpressure trip spring
compression until the Type VSX-2 trips.
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.
Parts List
Type VSX-2 Slam-Shut Device
(Figure 1)
Key Description
1
Type VSX-2 Module
2* Upper O-ring
3* Lower O-ring
4
Set Screw
6
Type Y602-12 Vent Assembly
7
High-Pressure Control Spring
8
Low-Pressure Control Spring
10 Machine Screw
11*
Gasket
12 Adjustment Tool
13
Pipe Plug
P590 Series Filter (Figure 2)
Key Description
1
Filter Body
2*
Filter Element
3
Filter Head
4
Machine Screw
5
Washer
6
Spring Washer
7* Gasket
299H Series Regulator
(Figures 3 through 6)
Key Description
1
Lower Casing
2
Upper Casing
3
Closing Cap
4
Spring Seat
*Recommended spare part
299H Series Regulator
(Figures 3 through 6) (continued)
Key Description
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
20 Connector
21 Pilot Supply Tubing (Without Filter)
22 Loading Tubing
23 Cap Screw
24 Machine Screw
25 Lever Pin
26 Lever
27 Vent Hood (Type Y602-12 Vent Assembly)
28 Diaphragm Assembly
29 Closing Cap
30 Machine Screw
31 Spring Case
32 Control Spring
33 Spring Seat
34 Bonnet
35 Locknut
36 Adjusting Screw
37 Hex Nut
38 Washer
39 Diaphragm Post
40 Pusher Post
41 Overtravel Spring
42 Machine Screw
43 Rivet
44 Retaining Ring
45 Check Valve Assembly
46 Machine Screw
47 Inlet Fitting
48 Stem Assembly
49* O-ring
50 Pilot Orifice
51 Inlet Screen
52* Pilot Disk Assembly
53* O-ring
54* O-ring
56 Screw
57 Lever
58 Pipe Plug
59 Pipe Plug, Internal Registration only
61 O-ring
62 Drive Screw
63 Nameplate
68* Wire Seal
69 Warning Tag, Aluminum
70 Bleed Restriction
80 Pad
81 Diaphragm Head
82 Insert (For Types 299HS and 299HSR only, see Figure 1)
83 O-ring (For Types 299HS and 299HSR only, see Figure 1)
84 Plate (For Types 299H and 299HR only)
85 O-ring (For Types 299H and 299HR only)
86 O-ring (For Types 299H and 299HR only)
87 Set Screw (For Types 299H and 299HR only)
88 Spring Seat (For Types 299HR and 299HSR only)
89 Label
93 Spring Seat Washer
