Additional Drilling Equipment - This Listing is for one Denison Style relief valve made in the US. This will fit the following Tongs Foster 58 58-02 58-93 58-93R 54-93 54-02 74-92 74-92R Gill 500 600 700 Peckomatic 631 Series. And many other tongs and power units. Location: Odessa, Texas. For complete listing information please select the Click To Bid button to see this item on eBay.