| Shank Length: | 2-1/4" |
|---|---|
| Inlet Size: | 1/2" NPT |
| Replaces: | 37C73U-641 |
| Outlet Size: | 1/2" Inverted Flare |
| Temperature Range (F): | 70°F to 160°F |
| Pilot Connection: | 1/4" Compression Fitting |
| Pressure Reg Setting: | 4" W.C. (Pilot & Main) |
| Mount: | 4 1/2" Bulb Insertion Length 3/4" NPT |
| Type: | Natural Gas (NG) |
| Standards Met: | CSA |
| Application: | Accessory |
The direct replacement is sku 100108354.
The direct cross reference is SKU: 9004353105. It can be found here: http://www.supplyhouse.com/AO-Smith-9004353105-White-Rodgers-Temperature-Control-for-Natural-Gas-FVIR-Related-3-5-Manifold-Pressure-Setting-A2-1-2
A.O. Smith part 9000246005 is the current part number for 37C73U-246.
We are not familiar with that setting. You may want to look through the Installation Guide (see link below) to see whether or not it is discussed. http://s3.pexsupply.com/manuals/1314894213432/62046_PROD_FILE.pdf