Visakhapatnam, Andhra Pradesh, India
Our Products
L20 (UCM A3) PRESSURE LOCK VALVE
The L20 Pressure Lock Valve is a solenoid operated check valve designed for hydraulic elevators and includes a self-closing manual lowering valve. Its purpose is to allow free flow of oil from the pump unit to the cylinder for upward travel and to prevent flow in the reverse direction from the cylinder to pump until an electrical signal is given to its solenoid.
The L20 is to be directly mounted on a Blain EV valve at the cylinder port without the need of any adapters. It can be either used as a standalone safety valve by docking on an existing Blain EV valve with separate tank line (for modernizing old installations) or can be used as an integrated safety valve together with Blains EVL valve without the need of separate tank connection.
Installed in the main cylinder line directly integrated with the main elevator control valve, the L20 can be employed as a safety back up valve to the down system of the main control valve to prevent unwanted down movement of the elevator should an electrical or mechanical malfunction occur in the main control valve (UCM case).
A Slack Rope Valve LK for roped elevators (e.g. 2:1 indirect transmission) is optional. It prevents the slack rope condition caused by the lowering of the ram when the car is suspended in the safeties or resting on the buffers.
The BLAIN EV program includes the widest range of options offered to the elevator industry for high performance passenger service. Easy to install, EVs are smooth, reliable and precise in operation throughout extreme load and temperature variations.
Available port sizes are , 1, 2 and 2 pipe threads, depending on flow. EVs start on less than minimum load and can be used for across the line or wye-delta starting. According to customers information, valves are factory adjusted ready for operation and very simple to readjust if so desired. The patented up levelling system combined with compensated pilot control ensure stability of elevator operation and accuracy of stopping independent of wide temperature variations.
EV valves include the following features essential to efficient installation and trouble free service:
| · Simple Responsive Adjustment | · Self-Cleaning Pilot Line Filters |
| · Temperature and Pressure Compensation | · Self-Cleaning Main Line Filter (Z-T) |
| · Solenoid with Connecting Cables | · Built-in Turbulence Suppressors |
| · Pressure Gauge and Shut Off Cock | · 70 HRc Rockwell Hardened Bore Surfaces |
| · Self-Closing Manual Lowering | · 100% Continuous Duty Solenoids |
| Technical Data: | ¾“ EV | 1 ½“ and 2“ EV | 2 ½“ EV | |
| Flow Range: | l/min | 10 – 125 | 30 – 800 | 500 – 1530 |
| Pressure Range: | bar | 5 – 100 | 3 – 100 | 3 – 68 |
| Press. Range CSA: | bar | 5 – 100 | 3 – 70 | 3 – 47 |
| Burst Pressure Z: | bar | 575 | 505 | 340 |
| Pressure Drop P–Z: | bar | 6 at 125 lpm | 4 at 800 lpm | 4 at 1530 lpm |
| Weight | kg | 5 | 10 | 14 |
| Oil Viscosity: | 25-60 mm²/sec. at 40°C (15-35 cSt. at 120°F) | |||
| Solenoids AC: | 230 V/0.18 A, 50/60Hz | |||
| Solenoids DC: | 24 V/1.1 A | |||
| Max. Oil Temperature: | 70°C (158°F) | |||
| Insulation Class, AC and DC: | IP 68 | |||
L10 (UCM A3) PRESSURE LOCK VALVE
The L10 Pressure Lock Valve is a solenoid operated check valve designed for hydraulic elevators and includes a self-closing manual lowering valve. Its purpose is to allow free ow of oil from the pump unit A to the cylinder B for upward travel and to prevent ow in the reverse direction from B to A until an electrical signal is given to the solenoid.
Installed in the main cylinder line directly adjacent to the main elevator control valve, the L10 can be employed as a safety back up valve to the down system of the main control valve to prevent unwanted down movement of the elevator should an electrical or mechanical malfunction occur in the main control valve.
Another application of the L10 is to reduce the amount of bounce in a hydraulic elevator system due to the compressibility factor of oil between the cylinder and the control valve, by mounting the L10 directly onto the cylinder connection. A Slack Rope Valve LK for roped elevators (e.g. 2:1 indirect transmission) is optional. It prevents the slack rope condition caused by the lowering of the ram when the car is suspended in the safeties or resting on the buffer.
| TYPE | CAPACITY / kg/cm² |
| VXSOV – 700 | 700 |
