Howard H Greensburg , PA November 21, 2014 Appliance: Thermador Gas Range PRSG364GD Thermador Range Prsg364gd: Bad gas valve. How to replace Valve Body (Standard). Ordered new one from appliance Pro's. Came in quickly. I received a gift card for Wine but cannot use in PA. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes