• 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
  • Telescopic stem eliminates the need for precise field measurement of extension stems and provides for ground movement caused by freezing and thawing

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 (telescopic)
    1. Length required (provide “A” dimension on the  illustration shown HERE)
    2. Carbon steel or stainless steel
  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
Extension Stem Adjustment Ranges
Range of Dimension "A" Square Telescopic Extension Stems
Minimum Maximum Length of 1-1/4" Top Part Length of 1-1/2" Top Part Torque
3 ft. 4-1/2 ft. 30" 30" 300 ft-lb
4-1/2 ft. 6 ft. 30" 48" 300 ft-lb
6 ft. 7-1/2 ft. 30" 66" 300 ft-lb
7-1/2 ft. 9 ft. 30" 84" 300 ft-lb
9 ft. 10-1/2 ft. 30" 102" 300 ft-lb
Other stem ranges available upon request.