1728 Orbit Way - Minden, Nevada 89423 P: 775-782-1700 F: 775-782-1701 info@maxtonvalve.com www.maxtonvalve.com
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Introduction
The Maxton OSV25 Overspeed Valve (Pipe Rupture) is designed to provide protection against sup-
ply line failure or over speed in the down direction. The OSV25 can be adjusted to stop the elevator
in the event of an over speed condition caused by a broken supply line or an abnormally high rate of
flow between the OSV25 and the power unit. The OSV25 complies with ASME A17.1 / CSA B44.
Working Flow (80% of Tripping Flow)
OSV25 3 – 24 gpm (11.4 – 90.8 l/min.)
Operating Pressure
Minimum 150 psi (10.3 bars)
Maximum 1000 psi (68.9 bars)
Line Connections
OSV25 ¾” NPT Jack & Tank
Oil Type Hydraulic ISO VG 32
150 SUS @ 100°F (38°C)
Operating Temperature 80° - 150°F (26 - 65°C)
Overall Dimensions
Width
4-5/8 inches (118 mm)
Height 5-1/2 inches (140 mm)
Depth 2-3/8 inches (60 mm)
Weight
2.9 lbs. (1.32 kg.)
Standard Features
Works on pressure drop, no electricity
is required.
Unit body construction.
Factory tested prior to shipping.
2 year limited warranty.
JACK
OVERSPEED VALVE (PIPE RUPTURE)
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