GAS USE IN BTUS PER HOUR AGAINST A GIVEN ORIFICE SIZE (DRILL SIZE) | ||||
DRILL SIZE | Decimal Equivalent | Natural Gas | Natural Gas | LP Gas |
↓ | Gas Pressure→ | 4″ WC | 7″WC | 11″ WC |
Gas use in Btus/hr | Gas use in Btus/hr | Gas use in Btus/hr | ||
75 | 0.021 | 1200 | 1600 | 3080 |
70 | 0.028 | 2125 | 2825 | 5475 |
65 | 0.035 | 2240 | 4400 | 8560 |
60 | 0.040 | 4350 | 5750 | 11175 |
3/64″ | 0.047 | 5975 | 7900 | 15360 |
55 | 0.052 | 7350 | 9710 | 18890 |
50 | 0.070 | 13300 | 17590 | 34250 |
45 | 0.082 | 18250 | 24150 | 46975 |
3/32″ | 0.094 | 23875 | 31600 | 61460 |
40 | 0.098 | 26075 | 34500 | 67095 |
7/64″ | 0.109 | 32490 | 42980 | 83600 |
35 | 0.110 | 32850 | 43450 | 84525 |
1/8″ | 0.125 | 42415 | 56100 | 109150 |
30 | 0.129 | 44820 | 59300 | 115345 |
9/64″ | 0.141 | 53660 | 71000 | 138090 |
25 | 0.150 | 60670 | 80260 | 156150 |
5/32″ | 0.156 | 66310 | 87725 | 170650 |
20 | 0.161 | 70360 | 93075 | 181075 |
11/64″ | 0.172 | 80200 | 106100 | 206425 |
15 | 0.180 | 87950 | 116350 | 226350 |
3/16″ | 0.188 | 95430 | 126250 | 245575 |
10 | 0.194 | 101630 | 134450 | 261575 |
13/64″ | 0.203 | 111950 | 148100 | 288000 |
5 | 0.206 | 114640 | 151640 | 295000 |
7/32″ | 0.219 | 129940 | 171900 | 334450 |
1 | 0.228 | 141110 | 186675 | 363150 |