Dimensions
The drawing illustrated is LX-300 SG
| LX-300 SG |
| A1 |
A2 |
A3 |
B1 |
B2 |
B3 |
H1 |
H2 |
h* |
| 39 ½ |
16 ½ |
21 ½ |
95 ½ |
57 |
78 ½ |
96 |
62 |
68 |
| Legend |
X |
Y |
Z |
Size |
| A |
Feedwater Inlet |
148 5⁄8 |
13.9⁄16 |
8.1⁄2. |
1.1⁄2” NPT |
| B |
Supply Gas Inlet |
148 5⁄8 |
56.1⁄4 |
5.1⁄4 |
2.1⁄2” NPT |
| C |
C Safety Valve Outlet |
72 5⁄6
87 13⁄16 |
55.5⁄8 |
114.15⁄16 |
2 x 2.1⁄2” NPT |
| D |
Steam Outlet |
21 13⁄16 |
50 5⁄8 |
127 |
4” 150# Flange |
| E |
Button Blow-Off
L. V. Control Blowdown
Automatic Blowdown |
148 5⁄8 |
47 5⁄8 |
3 |
1 1⁄4” NPT |
| F |
Fuel Gas Outlet |
123 3⁄8 |
13 9⁄16 |
95 15⁄16 |
20” I. D. Duct |
| G |
Economizer Drain |
123 3⁄8 |
13 9⁄16 |
31 7⁄16 |
2” NPT |
| H |
Boiler Corner |
0 |
0 |
0 |
— |
(Inches)
* Minimum height for Boiler Knock Down

| NO. |
NAME OF PART |
NO. |
NAME OF PART |
| 1 |
MAIN GAS VALVE |
17 |
WATER VALVE |
| 2 |
MAIN GAS REGULATOR |
18 |
CHECK VALVE |
| 3 |
GAS CONTROL VALVE |
19 |
CHECK VALVE |
| 4 |
MAIN GAS ORIFICE |
20 |
FLOW REGULATING VALVE |
| 5 |
TEST FIRING VALVE |
21 |
SAFETY VALVE |
| 6 |
PILOT GAS VALVE |
22 |
SAMPLE WATER VALVE |
| 7 |
PILOT GAS REGULATOR |
23 |
BLOWDOWN CONTROL VALVE |
| 8 |
PILOT GAS CONTROL VALVE |
24 |
BLOWDOWN STRAINER |
| 9 |
PILOT GAS ORIFICE |
25 |
BLOWDOWN VALVE |
| 10 |
PILOT AIR ORIFICE |
26 |
L.V.C. BLOW-OFF VALVE |
| 11 |
BLOW-OFF VALVE |
27 |
GAS PRESSURE SWITCH |
| 12 |
PRESSURE SWITCH |
28 |
GAS PRESSURE SWITCH |
| 13 |
PRESSURE SENSOR |
29 |
AIR PRESSURE SWITCH |
| 14 |
STEAM PRESSURE SWITCH |
30 |
AIR PRESSURE SWITCH |
| 15 |
STEAM PRESSURE SWITCH |
31 |
GAS PRESSURE SWITCH |
| 16 |
STEAM PRESSURE SWITCH |
32 |
AIR CONTROL VALVE |
NOTE:
1. Unless otherwise specified, all items are standard.
2. This drawing is illustrated with an economizer.
3. Flanges used are anNsi B16.5 class 150#.
4. S safety valve size will change for boiler set below 150psig.
5. Design, specifications and some pipings are subject to change without notice.