From The Manufacturer
Safety Valve, Baso, 3/4" NPT in/out, 1/4" CCT pilot out only, 402,500 BTU, millivolt, Penn-Johnson, replaces Nieco: 12143 (CCC item S-217)

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| Manufacturer | AllPoints |
| Model Number | 521136 |
| Weight | 1.31 lbs |
| Width | 0″ |
| Depth | 0″ |
| Height | 0″ |
| Type | pilot assembly |