• Eliminates broken valve stems caused by over-opening or over-closing
  • Field-adjustable for any number of turns within the range of each model
  • Constructed of heavy-duty, non-corrosive Dupont Delrin polymer, providing high-impact resistance even in cold climates
  • Double O-ring seals keep out water and dirt
  • 3rd-party tested to over 1 million revolutions
  • Provided with stainless steel hardware
  • Also available for use above ground in the floor or with Wall Brackets 

Extension Stem Torque Ratings

Extension Stems rated for a minimum of 300 ft.lbs. For higher torque capacity, consult Trumbull.

Click HERE for PDF of Exploded View

Installation instructions and videos are available online: www.youtube.com/user/trumbullmfg

Ordering Instructions

  1. Specify direction of open (open left or open right)
  2. Model required (available in 57, 275 or 870 turns)
  3. Extension stem required (1-1/4″ square)
    1. Length required (provide “A” dimension on the illustration shown HERE)
    2. Carbon steel or stainless steel
    3. Tubing or solid bar
  1. Debris Shield Item #367-9415 recommended for buried service
Open Left Open Right
Model Number Number of Turns Trumbull Item No. Trumbull Item No.
57T 0 - 57 367-9394 367-9393
275T 0 - 275 367-9396 367-9395
870T 0 - 870 367-9400 367-9399