EXHIBIT 12

STATEMENT OF COMPUTATION OF RATIOS OF EARNINGS TO FIXED CHARGES

(dollars in thousands)



|                                                                                             |  |                            |         |   |                            |   |                            |  |                            |        |  |                             |        |   |  |   |       
|-------------------------------------------------------------------------------------------- |  | -------------------------- | ------- | - | -------------------------- | - | -------------------------- |  | -------------------------- | ------ |  | --------------------------- | ------ | - |  | - | ------
|                                                                                             |  |                            |         |   | (Restated)                
|STANADYNE HOLDINGS, INC.                                                                     |  |                            |         |   |                            |   |                            |  |                            |        |  |                             |        |   |  |   |       
|                                                                                             |  | Year EndedDecember 31,2009 |         |   | Year EndedDecember 31,2008 |   | Year EndedDecember 31,2007 |  | Year EndedDecember 31,2006 |        |  | Year EndedDecember 
31,2005
|                                                                                             |  |                            |         |   |                            |   |                            |  | (Unaudited)                |        |  | (Unaudited)                
|Income (loss) before taxes, extraordinary item and cumulative effect of change in accounting |  | $                          | (27,216 | ) |                            | $ | 5,264                      |  | $                          | 8,586  |  | $                           | (3,805 | ) |  | $ | 3,772 
|Fixed charges deducted from earnings                                                         |  |                            | 29,956  |   |                            |   | 29,228                     |  |                            | 28,890 |  |                             | 29,743 |   |  |   | 28,064
|                                                                                             |  |                            |         |   |                            |   |                            |  |                            |        |  |                             |        |   |  |   |       
|Earnings available for payment of fixed charges                                              |  | $                          | 2,740   |   |                            | $ | 34,492                     |  | $                          | 37,476 |  | $                           | 25,938 |   |  | $ | 31,836
|                                                                                             |  |                            |         |   |                            |   |                            |  |                            |        |  |                             |        |   |  |   |       
|Fixed charges:                                                                               |  |                            |         |   |                            |   |                            |  |                            |        |  |                             |        |   |  |   |       
|Interest expense                                                                             |  | $                          | 20,935  |   |                            | $ | 16,735                     |  | $                          | 17,151 |  | $                           | 18,308 |   |  | $ | 18,379
|Amortization of deferred financing fees                                                      |  |                            | 8,791   |   |                            |   | 12,217                     |  |                            | 10,994 |  |                             | 10,745 |   |  |   | 8,986 
|Portion of rent deemed to be interest (Rent Expense 1/3)                                     |  |                            | 230     |   |                            |   | 276                        |  |                            | 745    |  |                             | 690    |   |  |   | 699   
|                                                                                             |  |                            |         |   |                            |   |                            |  |                            |        |  |                             |        |   |  |   |       
|Total fixed charges                                                                          |  | $                          | 29,956  |   |                            | $ | 29,228                     |  | $                          | 28,890 |  | $                           | 29,743 |   |  | $ | 28,064
|                                                                                             |  |                            |         |   |                            |   |                            |  |                            |        |  |                             |        |   |  |   |       
|Ratio of earnings to fixed charges(1)                                                        |  |                            |        |   |                            |   | 1.2                        |  |                            | 1.3    |  |                             |       |   |  |   | 1.1   
|                                                                                             |  |                            |         |   |                            |   |                            |  |                            |        |  |                             |        |   |  |   |       



|                                                                                             |  |                            |         |   |                            |   |                            |  |                            |        |                            |   |        |  |   |       
|-------------------------------------------------------------------------------------------- |  | -------------------------- | ------- | - | -------------------------- | - | -------------------------- |  | -------------------------- | ------ | -------------------------- | - | ------ |  | - | ------
|                                                                                             |  |                            |         |   | (Restated)                
|STANADYNE CORPORATION                                                                        |  |                            |         |   |                            |   |                            |  |                            |        |                            |   |        |  |   |       
|                                                                                             |  | Year EndedDecember 31,2009 |         |   | Year EndedDecember 31,2008 |   | Year EndedDecember 31,2007 |  | Year EndedDecember 31,2006 |        | Year EndedDecember 31,2005
|                                                                                             |  |                            |         |   |                            |   |                            |  | (Unaudited)                |        | (Unaudited)               
|Income (loss) before taxes, extraordinary item and cumulative effect of change in accounting |  | $                          | (15,404 | ) |                            | $ | 15,781                     |  | $                          | 17,927 |                            | $ | 4,570  |  | $ | 11,224
|Fixed charges deducted from earnings                                                         |  |                            | 18,204  |   |                            |   | 18,773                     |  |                            | 19,594 |                            |   | 21,471 |  |   | 20,676
|                                                                                             |  |                            |         |   |                            |   |                            |  |                            |        |                            |   |        |  |   |       
|Earnings available for payment of fixed charges                                              |  | $                          | 2,800   |   |                            | $ | 34,554                     |  | $                          | 37,521 |                            | $ | 26,041 |  | $ | 31,900
|                                                                                             |  |                            |         |   |                            |   |                            |  |                            |        |                            |   |        |  |   |       
|Fixed charges:                                                                               |  |                            |         |   |                            |   |                            |  |                            |        |                            |   |        |  |   |       
|Interest expense                                                                             |  | $                          | 16,401  |   |                            | $ | 16,740                     |  | $                          | 17,164 |                            | $ | 18,321 |  | $ | 18,379
|Amortization of deferred financing fees                                                      |  |                            | 1,572   |   |                            |   | 1,757                      |  |                            | 1,685  |                            |   | 2,460  |  |   | 1,598 
|Portion of rent deemed to be interest (Rent Expense 1/3)                                     |  |                            | 231     |   |                            |   | 276                        |  |                            | 745    |                            |   | 690    |  |   | 699   
|                                                                                             |  |                            |         |   |                            |   |                            |  |                            |        |                            |   |        |  |   |       
|Total fixed charges                                                                          |  | $                          | 18,204  |   |                            | $ | 18,773                     |  | $                          | 19,594 |                            | $ | 21,471 |  | $ | 20,676
|                                                                                             |  |                            |         |   |                            |   |                            |  |                            |        |                            |   |        |  |   |       
|Ratio of earnings to fixed charges(1)                                                        |  |                            |        |   |                            |   | 1.8                        |  |                            | 1.9    |                            |   | 1.2    |  |   | 1.5   
|                                                                                             |  |                            |         |   |                            |   |                            |  |                            |        |                            |   |        |  |   |       



|(1) | The ratio of earnings to fixed charges is not presented for years that the ratio is less than 1.0. The deficiency of earnings at Stanadyne Holdings, Inc. was $27,216
and $3,805 during the year ended December 31, 2009 and 2006, respectively. The deficiency of earnings at Stanadyne Corporation was $15,404 during the year ended December 31, 2009.
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