HVAC PROTech®

 

 

 

Natural Gas1020 BTU .65SG 3.50" WC Manifold

 

 

    Orifice & Spud Sizing Chart

 

Propane 2500 BTU 1.5SG 11" WC Manifold

 

 

 

Input BTU/Hr. Per Orifice/Spud Drill Size Decimal Tolerance Drill Size Decimal Tolerance Input BTU/Hr. Per Orifice/Spud
4,200 60 .040 60 .040 11,540
4,400 59 .041 59 .041 12,115
4,600 58 .042 58 .042 12,720
4,800 57 .043 57 .043 13,355
5,800 56 .046 56 .046 15,600
7,100 55 .052 55 .052 19,550
7,900 54 .056 54 .056 21,960
9,300 53 .059 53 .059 25,630
10,600 52 .063 52 .063 29,220
12,000 51 .067 51 .067 32,630
12,900 50 .070 50 .070 35,730
14,100 49 .073 49 .073 38,950
15,100 48 .076 48 .076 42,375
16,300 47 .078 47 .078 45,560
17,300 46 .081 46 .081 48,900
17,700 45 .082 45 .082 50,440
19,500 44 .086 44 .086 55,500
20,000 43 .089 43 .089 59,440
23,000 42 .093 42 .093 65,620
25,000 41 .096 41 .096 69,175
25,250 40 .098 40 .098 72,000
27,500 39 .099 39 .099 74,380
27,750 38 .101 38 .101 77,400
28,500 37 .104 37 .104 81,125
29,950 36 .106 36 .106 85,170
31,900 35 .110 35 .110 90,800
32,500 34 .111 34 .111 92,500
33,600 33 .113 33 .113 96,000
35,500 32 .116 32 .116 100,900
38,000 31 .120 31 .120 108,125
45,000 30 .128 30 .128 135,000
48,900 29 .136 29 .136 150,000
54,000 28 .140 28 .140 160,000
60,000 27 .144 27 .144 175,000
63,000 26 .147 26 .147 -
65,080 25 .149 25 .149 190,000
66,000 24 .152 24 .152 190,000
67,100 23 .154 23 .154 200,000
68,120 22 .157 22 .157 200,000
69,220 21 .159 21 .159 210,000
69,000 20 .161 20 .161 220,000
72,500 19 .166 19 .166 220,000
75,000 18 .169 18 .169 240,000
80,500 17 .173 17 .173 240,000
86,500 16 .177 16 .177 260,000
92,600 15 .180 15 .180 260,000
96,000 14 .182 14 .182 260,000
100,000 13 .185 13 .185 280,000
102,500 12 .189 12 .189 280,000
105,000 11 .191 11 .191 300,000
110,000 10 .193 10 .193 300,000
113,000 9 .199 9 .199 310,000
116,000 8 .199 8 .199 310,000
119,000 7 .201 7 .201 320,000
121,500 6 .204 6 .204  
125,000 5 .205 5 .205  
130,000 4 .209 4 .209  
135,000 3 .213 3 .209  
147,000 2 .221 2 .221  
150,000 1 .228 1 .228