BLAIN HYDRAULICS – COMPANY PROFILE
Since 1970 Blain hydraulics has specialized in the design and manufacture of the finest and safest control valves for hydraulic elevators. With over half a million Blain valves in operation worldwide, we are a leading company offering a wide spectrum of accessories and solutions for the elevator industry.
CONTROL VALVES
The BLAIN EV program includes the widest range of options offered to the elevator industry for high performance passenger service. Easy to install, EV‘s are smooth, reliable and precise in operation throughout extreme load and temperature variations.
Available port sizes are ¾”, 1½”, 2″ and 2½” pipe threads, depending on flow. EV‘s 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 | |||
Range
EV0 (1 ↑ 2 ↓)
Up:
Up to 0.16 m/s. 1 Up Speed. Up Start is smooth and adjustable. Up Stop is by de-energising the pump-motor.
Down:
Up to 1.0 m/s. 1 Full Speed and 1 Levelling Speed. All down functions are smooth and adjustable.
EV1 (1 ↑(Soft Stop) 2 ↓)
Up:
Up to 0.16 m/s. 1 Up Speed. Up to 0.4 m/s by over-travelling and levelling back down. Up Start is smooth and adjustable. Up Stop is smooth and exact through valve operation whereby the pump must run approx. ½ sec. longer through a time relay.
Down:
Up to 1.0 m/s. 1 Full Speed and 1 Levelling Speed. All down functions are smooth and adjustable.
EV10 (2 ↑ 2 ↓)
Up:
Up to 1.0 m/s. 1 Full Speed and 1 Levelling Speed. Up Start and Slow Down are smooth and adjustable. Up Levelling speed is adjustable. Up Stop is by de-energising the pump-motor.
Down:
Up to 1.0 m/s. 1 Full Speed and 1 Levelling Speed. All down functions are smooth and adjustable.
EV100 (1 ↑ 2 ↓) – fully adjustable
Up:
Up to 1.0 m/s. 1 Full Speed and 1 Levelling Speed. All ‘up’ functions are smooth and adjustable. Up Levelling speed is adjustable. Up Stop is smooth and exact through valve operation whereby the pump must run approx. ½ sec. longer through a time relay.
Down:
Up to 1.0 m/s. 1 Full Speed and 1 Levelling Speed. All down functions are smooth and adjustable.
KV Series
KV ½” solenoid valves are designed for small hydraulic lifts operating at speeds up to 0.16 m/s depending on the valve selected. The smooth and accurate ride characteristics of the KV2S valve which includes ‘soft stop’ in both directions, render it highly suitable for quality home lifts and lifts for the handicapped.
| Flow Range: | 5-80 l/min. |
| Oil Viscosity: | 25-60 cSt. at 40°C (15-35 cSt. at 120°F) |
| Solenoids AC: | 230 V/0.18 A, 50/60 Hz |
| Solenoids DC: | 24 V/1.1 A |
| Ports: | P Pump, Z Cylinder and T Tank all G½” |
| Insulation Class, AC and DC: | IP 68 |
| Pressure Range: | 8-100 bar |
| Burst Pressure: | 500 bar |
| Max. Oil Temperature: | 70°C (158°F) |
KV Series Range
KV1P (1 ↑ 1 ↓)
Up:
One up speed, 0.16 m/s max. Up start has built-in damping. Up stop has no damping (pump stops).
Down:
One down speed, 0.16 m/s max. Down start has adjustable damping. Down speed is adjustable. Down stop has built-in damping.
KV1S (1 ↑(Soft Stop) 1 ↓)
Up:
One up speed, 0.16 m/s max. With soft stop, or 0.4 m/s max. With over-travel and relevelling. Up start has built-in damping. Up stop has adjustable damping (delayed pump stop required).
Down:
One down speed, 0.16 max. Down start has adjustable damping. Down speed is adjustable. Down stop has built-in damping.
KV2P (1 ↑ 2 ↓)
Up:
One up speed, 0.16 m/s max. Up start has built-in damping. Up stop has no damping (pump stops).
Down:
Two down speeds, 1 m/s max. Down start has adjustable damping. Fast down speed and levelling speeds are adjustable. Slow down and stop have built-in damping.
KV2S (1 ↑(Soft Stop) 2 ↓)
Up:
One up speed, 0.16 m/s max. With soft stop, or 0.4 m/s max. With over-travel and relevelling. Up start has built-in damping. Up stop has adjustable damping (delayed pump stop required).
Down:
Two down speeds, 1 m/s max. Down start has adjustable damping. Fast down speed and levelling speeds are adjustable. Slow down and stop have built-in damping.
GV Series
For hydraulic car parking ports and material lifting platforms. The Blain car parking platform valve can be used in car parking applications where the platform needs to be raised above the ground to accommodate another car below the port. Alternatively this valve is also ideal for lifting material, cargo and suitable for dumbwaiters and goods lifts. The valve offers single up speed and adjustable down speed.
| Flow Range: | 1-24 l/min. |
| Oil Viscosity: | 25-60 cSt. at 40°C (15-35 cSt. at 120°F) |
| Solenoids AC: | 230 V/0.18 A, 50/60 Hz |
| Solenoids DC: | 24 V/1.1 A |
| Ports: | P Pump, Z Cylinder and T Tank |
| Insulation Class, AC and DC: | IP 68 |
| Pressure Range: | 8-130 bar |
| Burst Pressure: | 600 bar |
| Max. Oil Temperature: | 70°C (158°F) |
HX – MX – DOWN VALVES
HX are manually operated down valves, adjustable in their down speed. They close automatically upon release. They can be used for emergency manual lowering or in combination with the EV down valve to achieve an over-speed of the elevator for testing the pipe rupture valve.
MX are solenoid operated down valves, adjustable in their acceleration, down speed and deceleration. They can be used for the revision or inspection travel of the elevator or as a particularly slow down speed valve in addition to the two down speeds of the EV valve to obtain extremely exact floor stops.
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 flow of oil from the pump unit A to the cylinder B for upward travel and to prevent fl 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.
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 ¾” 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 Blain’s 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.
RUPTURE VALVE – R10
The rupture valve R 10 can be mounted in any position directly onto the cylinder inlet connection Z. In the event of failure in the main cylinder line or where the down speed exceeds allowable limits, the R 10 valve closes, bringing the car to a smooth stop.
MRL-H SERVICE UNIT
The MRL-H has been designed for servicing and rescuing operations of machine room-less (MRL) hydraulic elevators remotely by having easy outside access, without needing to be in the pit. Many functional valves such as self-closing manual lowering valve, hand pump, slack rope valve, pressure relief valve, manual lowering speed adjustment, ball valve as well as a manometer have been added to a compact body. MRL-H can be located up to 6 meter (19 feet) away and 5 meter (16 feet) high from the main power unit to a convenient location for easy access.
SUBMERSIBLE PUMPS & MOTORS
SB Motori submersible single and 3 phase motors are specifically designed for immersion in oil to work with submersible screw pumps and meet the requirements of low noise level and high efficiency in hydraulic lifts.
SEIM screw pumps are specifically designed for immersion in oil to work with hydraulic lifts and meet the requirements of low noise level, high efficiency and low pulsation with flow up to 900 l/m.
