1728 Orbit Way - Minden, Nevada 89423 P: 775-782-1700 F: 775-782-1701 info@maxtonvalve.com www.maxtonvalve.com
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THE INFORMATION CONTAINED HEREIN IS FOR USE BY SKILLED HYDRAULIC ELEVATOR PROFESSIONALS
CAUTION
Stay out of the pit when the car is in motion.
Once tripped, the OSV25 must be reset to a normal
open position by making an up run.
Top View
Front View
INITIAL SETTING:
Turn Tripping Speed Adjuster (TS) OUT (CCW) to stop.
ADJUSTMENT PROCEDURES
NOTE: OSV25 adjustments should be conducted with a fully loaded car. Whenever possible, run car to
an intermediate floor during adjustments and tests. It may be advisable to adjust for a slightly faster down
transition to insure floor stop.
1. Set car speed to contract down speed +25% (contract speed = full down speed with rated load).
2. Return car to the upper floor; turn TS in (CW) one quarter turn. Exit the pit and register a down call.
Repeat this procedure until the valve actuates. Tighten jam nut to lock setting in place.
3. Apply seal to TS adjuster as required by state and local code.
4. Adjust the down valve back to normal settings.
OSV25 OVERSPEED VALVE (PIPE RUPTURE)
TS Adjuster Initial Setting for Quick Start
Turns inward from all the way out
——OSV25
Contract Flow (GPM)
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