Product category:
Process Hardware (Pipes, Nozzles, Heaters, etc)
News Release from: Bray Controls USA | Subject: Series 73, R5
Edited by the Engineeringtalk Editorial
Team on 02 June 2004
Rugged, low-cost actuators for rotary
valves
The Series 73, R5 is a new rectangular electric actuator for rotary valves that delivers highly reliable service at a price claimed to be unmatched in the industry.
The Series 73, R5 is a new rectangular electric actuator for rotary valves that delivers highly reliable service at a price claimed to be unmatched in the industry Innovative Bray electric actuators have a proven record of success
Building on this record, Bray has combined engineering expertise and years of field experience to meet the needs of current industrial applications at a lower price.
The R5 is available in three on/off models with 100, 300 or 600lb-in output torque.
It is waterproof, rated NEMA 4, 4X and IP 65.
Especially significant, Bray has specifically engineered the R5 for customer friendly convenience.
Designed to offer easy, interference-free access to terminal block wiring and cam adjustment, the R5 greatly reduces the time required for field startup, and installation.
Maintenance can be performed with ease and safety.
The low-profile economical design of the R5 delivers high torque in a compact, housing.
This design offers the advantages of smaller space requirements, lighter weight and ease of installation and maintenance when compared to other electric actuators.
The enclosure features die cast aluminium construction with a high-quality polyester powder coating offering exceptional corrosion, wear, impact and ultraviolet resistance.
R5 actuators also meet ISO5211 standards for mounting of actuators to valves.
The R5 features a 120 or 220V AC single-phase permanent split-capacitor reversible induction motor.
12 or 24V DC motors are available on request.
The UL listed motor features a built-in thermal overload protector of a bimetallic strip in the windings set at 110C with automatic reset.
All AC motors feature an internal motor break.
When power to the actuator is cut off the brake stops the motor and holds the valve in position until power is restored.
A heavy-duty spur gear train includes precision cut, multistaged gears and shafts.
The gears and shafts are heat-treated high alloy steel to withstand locked rotor conditions.
The spur gear system is permanently lubricated at the factory.
The R5 also has a heavy-duty printed circuit board that replaces cumbersome internal component wiring.
It features double the thickness of commonly used circuit boards to withstand line vibration and shock.
The terminal block has been designed for ease of customer wiring without interference from other components and features clearly marked terminal numbers.
The simple, lever-operated block simplifies wiring connection.
The R5's die-cast aluminium cover and base are waterproof and designed to meet NEMA 4, 4X and IP 65 specifications.
The large O-ring seal between the cover and base makes the enclosure waterproof and prevents ingress of moisture.
This seal is far superior to commonly used gaskets.
Bray has provided two SPDT switches as standard.
The 10A, 220V AC switches are used for AC motor control.
Two optional auxiliary switches are available on request.
Switches are easily accessible without interference from other components.
Cams on the R5 are infinitely adjustable by a hex key with no special tools needed.
Standard factory setting allows 90-degree reversible rotation between open and closed positions.
The R5 also features a highly visible valve position indication system.
Made of ABS, a pointer on top of the unit indicates valve position through the full range of travel.
Open and close lettering and a direction of travel arrow are moulded into the housing for easy reference and permanent position indication.
A manual override disengage feature allows manual rotation of valve position with electrical power off.
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