EXHIBIT 12

STATEMENT OF COMPUTATION OF RATIOS OF EARNINGS TO FIXED CHARGES

(dollars in
thousands)

STANADYNE HOLDINGS, INC.



|                                                                                             |  |                            |        |   |                            |   |         |                            |  |   |                            |  |  |                            |        |  |  |   |        |  
|-------------------------------------------------------------------------------------------- |  | -------------------------- | ------ | - | -------------------------- | - | ------- | -------------------------- |  | - | -------------------------- |  |  | -------------------------- | ------ |  |  | - | ------ | -
|                                                                                             |  | Year EndedDecember 31,2010 |        |   | Year EndedDecember 31,2009 |   |         | Year EndedDecember 31,2008 |  |   | Year EndedDecember 31,2007 |  |  | Year EndedDecember 31,2006 |       
|                                                                                             |  |                            |        |   |                            |   |         |                            |  |   |                            |  |  | (Unaudited)                |       
|                                                                                             |  |                            |        |   |                           
|(Loss) Income before taxes, extraordinary item and cumulative effect of change in accounting |  | $                          | (9,948 | ) |                            | $ | (27,216 | )                          |  | $ | 5,264                      |  |  | $                          | 8,586  |  |  | $ | (3,805 | )
|Fixed charges deducted from earnings                                                         |  |                            | 31,077 |   |                            |   | 29,956  |                            |  |   | 29,228                     |  |  |                            | 28,890 |  |  |   | 29,743 |  
|                                                                                             |  |                            |        |   |                            |   |         |                            |  |   |                            |  |  |                            |        |  |  |   |        |  
|Earnings available for payment of fixed charges                                              |  | $                          | 21,129 |   |                            | $ | 2,740   |                            |  | $ | 34,492                     |  |  | $                          | 37,476 |  |  | $ | 25,938 |  
|                                                                                             |  |                            |        |   |                            |   |         |                            |  |   |                            |  |  |                            |        |  |  |   |        |  
|Fixed charges:                                                                               |  |                            |        |   |                            |   |         |                            |  |   |                            |  |  |                            |        |  |  |   |        |  
|Interest expense                                                                             |  | $                          | 29,161 |   |                            | $ | 20,935  |                            |  | $ | 16,735                     |  |  | $                          | 17,151 |  |  | $ | 18,308 |  
|Amortization of deferred financing fees                                                      |  |                            | 1,695  |   |                            |   | 8,791   |                            |  |   | 12,217                     |  |  |                            | 10,994 |  |  |   | 10,745 |  
|Portion of rent deemed to be interest (Rent Expense 1/3)                                     |  |                            | 221    |   |                            |   | 230     |                            |  |   | 276                        |  |  |                            | 745    |  |  |   | 690    |  
|                                                                                             |  |                            |        |   |                            |   |         |                            |  |   |                            |  |  |                            |        |  |  |   |        |  
|Total fixed charges                                                                          |  | $                          | 31,077 |   |                            | $ | 29,956  |                            |  | $ | 29,228                     |  |  | $                          | 28,890 |  |  | $ | 29,743 |  
|                                                                                             |  |                            |        |   |                            |   |         |                            |  |   |                            |  |  |                            |        |  |  |   |        |  
|Ratio of earnings to fixed charges(1)                                                        |  |                            |       |   |                            |   |        |                            |  |   | 1.2                        |  |  |                            | 1.3    |  |  |   |       |  
|                                                                                             |  |                            |        |   |                            |   |         |                            |  |   |                            |  |  |                            |        |  |  |   |        |  
|                                                                                             |  |                            |        |   |                           
|STANADYNE CORPORATION                                                                        |  |                            |        |   |                            |   |         |                            |  |   |                            |  |  |                            |        |  |  |   |        |  
|                                                                                             |  |                            |        |   |                           
|                                                                                             |  | Year EndedDecember 31,2010 |        |   | Year EndedDecember 31,2009 |   |         | Year EndedDecember 31,2008 |  |   | Year EndedDecember 31,2007 |  |  | Year EndedDecember 31,2006 |       
|                                                                                             |  |                            |        |   |                            |   |         |                            |  |   |                            |  |  | (Unaudited)                |       
|                                                                                             |  |                            |        |   |                           
|Income (loss) before taxes, extraordinary item and cumulative effect of change in accounting |  | $                          | 2,371  |   |                            | $ | (15,404 | )                          |  | $ | 15,781                     |  |  | $                          | 17,927 |  |  | $ | 4,570  |  
|Fixed charges deducted from earnings                                                         |  |                            | 18,816 |   |                            |   | 18,204  |                            |  |   | 18,773                     |  |  |                            | 19,594 |  |  |   | 21,471 |  
|                                                                                             |  |                            |        |   |                            |   |         |                            |  |   |                            |  |  |                            |        |  |  |   |        |  
|Earnings available for payment of fixed charges                                              |  | $                          | 21,187 |   |                            | $ | 2,800   |                            |  | $ | 34,554                     |  |  | $                          | 37,521 |  |  | $ | 26,041 |  
|                                                                                             |  |                            |        |   |                            |   |         |                            |  |   |                            |  |  |                            |        |  |  |   |        |  
|Fixed charges:                                                                               |  |                            |        |   |                            |   |         |                            |  |   |                            |  |  |                            |        |  |  |   |        |  
|Interest expense                                                                             |  | $                          | 17,161 |   |                            | $ | 16,401  |                            |  | $ | 16,740                     |  |  | $                          | 17,164 |  |  | $ | 18,321 |  
|Amortization of deferred financing fees                                                      |  |                            | 1,434  |   |                            |   | 1,572   |                            |  |   | 1,757                      |  |  |                            | 1,685  |  |  |   | 2,460  |  
|Portion of rent deemed to be interest (Rent Expense 1/3)                                     |  |                            | 221    |   |                            |   | 230     |                            |  |   | 276                        |  |  |                            | 745    |  |  |   | 690    |  
|                                                                                             |  |                            |        |   |                            |   |         |                            |  |   |                            |  |  |                            |        |  |  |   |        |  
|Total fixed charges                                                                          |  | $                          | 18,816 |   |                            | $ | 18,203  |                            |  | $ | 18,773                     |  |  | $                          | 19,594 |  |  | $ | 21,471 |  
|                                                                                             |  |                            |        |   |                            |   |         |                            |  |   |                            |  |  |                            |        |  |  |   |        |  
|Ratio of earnings to fixed charges(1)                                                        |  |                            | 1.1    |   |                            |   |        |                            |  |   | 1.8                        |  |  |                            | 1.9    |  |  |   | 1.2    |  
|                                                                                             |  |                            |        |   |                            |   |         |                            |  |   |                            |  |  |                            |        |  |  |   |        |  



|(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 $9,948,
$27,216 and $3,805 during the year ended December 31, 2010, 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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