Emerson Fisher P520L User manual

Instruction Manual
D450013T012
August 2016
Type P520L
Type P520L Reamer
Introduction
The Type P520L tapered reamer is calibrated for propane
vapor by drill size. Refer to the NATIONAL FUEL GAS CODE,
NFPA 54-2006, Table F.1 (b) and Table F.1 (c) for BTU/hour for
a specic orice and gas size. Use Type P520L to enlarge or
clean out orices on LP-Gas appliances ranging from drill size
no. 52 to 30 (0.0635 to 0.125 in.).
Use the reamer as follows:
The reamer is designed with knurls on the handle for better
grip. Make sure reamer is held in vertical position while doing
the following steps.
To enlarge orices:
1. Loosen the reamer by twisting the knurls against the
slide rule.
2. Push the slide rule towards the end of the reamer body
until the cursor points to the desired orice or drill size.
3. Once the cursor is aligned with the desired drill size,
lock position by twisting the knurl in opposite directions.
4. Hold the orice with one hand and the reamer with
the other.
5. Insert the tip of the reamer into the orice as far as it
can go.
6. Start reaming until the orice contacts the end of the
reamer body.
7. Remove the reamer from the orice.
8. Unlock the reamer and retract the slide rule to the fully
closed position.
9. Lock handle.
To check orice sizes:
1. Loosen the reamer.
2. Extend the reamer tip fully.
3. Lock the reamer.
4. Insert the reamer tip into the orice until it sits
quite snugly.
5. Unlock the reamer and allow the handle to drop and
contact the tip of the orice.
6. Lock position.
7. Read the indicated drill size
8. Remove the reamer and retract the slide rule to the fully
closed position.
9. Lock handle.
CAUTION
Always retract the reamer to the
fully closed position and tighten the handle
before placing the reamer into pocket. Failure
to do so may result in personal injury.
This reamer can also be used on appliance orices
where gas other than propane is used. The following
chart shows the BTU Orice Capacity by Gas and Orice
Sizes. (Tables are from NATIONAL FUEL GAS CODE,
NFPA 54-2006, 2006 edition.)
Figure 1. Type P520L Reamer
HANDLE WITH
KNURLS
CURSOR
DRILL MARKS
SLIDE RULE
REAMER TIP
EXTENDS AT
THIS END
MARKINGS
REAMER TIP
P2115_1
P2114_1
P2116_1

Type P520L
ORIFICE OR DRILL SIZE PROPANE BUTANE
0.008
0.009
0.010
0.011
0.012
519
656
812
981
1169
589
744
921
1112
1326
80
79
78
77
76
1480
1708
2080
2629
3249
1678
1936
2358
2980
3684
75
74
73
72
71
3581
4119
4678
5081
5495
4059
4669
5303
5760
6230
70
69
68
67
66
6375
6934
7813
8320
8848
7227
7860
8858
9433
10,031
65
64
63
62
61
9955
10,535
11,125
11,735
12,367
11,286
11,943
12,612
13,304
14,020
60
59
58
57
56
13,008
13,660
14,333
15,026
17,572
14,747
15,486
16,249
17,035
19,921
55
54
53
52
51
21,939
24,630
28,769
32,805
36,531
24,872
27,922
32,615
37,190
41,414
50
49
48
47
46
39,842
43,361
46,983
50,088
53,296
45,168
49,157
53,263
56,783
60,420
Table F.1 (b). LP-Gases (BTU/hour at Sea Level) Table F.1 (b). LP-Gases (BTU/hour at Sea Level) (continued)
SPECIFIC
GRAVITY MULTIPLIER SPECIFIC GRAVITY MULTIPLIER
0.45
0.50
0.55
0.60
0.65
0.70
0.75
0.80
0.85
0.90
1.155
1.095
1.045
1.000
0.961
0.926
0.894
0.866
0.840
0.817
0.95
1.00
1.05
1.10
1.15
1.20
1.25
1.30
1.35
1.40
0.795
0.775
0.756
0.739
0.722
0.707
0.693
0.679
0.667
0.655
Table F.1 (c). Multipliers for Utility Gases of
Another Specic Gravity
ORIFICE OR DRILL SIZE PROPANE BUTANE
45
44
43
42
41
54,641
60,229
64,369
71,095
74,924
61,944
68,280
72,973
80,599
84,940
40
39
38
37
36
78,029
80,513
83,721
87,860
92,207
88,459
91,215
94,912
99,605
104,532
35
34
33
32
31
98,312
100,175
103,797
109,385
117,043
111,454
113,566
117,672
124,007
132,689
30
29
134,119
150,366
152,046
170,466
Notes:
1. BTU per cubic foot
2. Specic gravity
3. Pressure at orice, inches w.c.
4. Orice coefcient
Propane
2516
1.52
11
0.9
Butane
3280
2.01
11
0.9
- continued -
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D450013T012 © 1971, 2016 Emerson Process Management Regulator
Technologies, Inc. All rights reserved. 07/16.
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