Electric Actuators are designed for rotary valves.
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Press Release Summary:
Rectangular Series 73, R5 is available in 3 ON-OFF models with 100, 300, or 600 lb-in. output torque. Waterproof unit, rated NEMA 4, 4X, and IP 65, offers interference-free access to terminal block wiring and infinite cam adjustment. Other features include 120 or 220 Vac, single-phase, permanent, split-capacitor, reversible induction motor; heavy-duty spur gear train; 2 SPDT switches; and valve position indication system. Heavy-duty PCB replaces internal component wiring.Original Press Release:
New, Rugged, Low Cost Electric Actuators for Rotary Valves
Houston, TX, May 25, 2004--Bray Controls has announced the Series 73, R5, a new rectangular electric actuator for rotary valves that delivers highly reliable service at a price believed 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 600 lb-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 start-up, 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 aluminum construction with a high-quality polyester powder coating offering exceptional corrosion, wear, impact and ultraviolet resistance. R5 actuators also meet ISO 5211 standards for mounting of actuators to valves.
The R5 features a 120 or 220 VAC single phase permanent split-capacitor reversible induction motor. 12 or 24 VDC motors are available upon request. The UL listed motor features a built-in thermal over-load protector of a bi-metallic strip in the windings set at 230°F (110°C) 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, multi-staged 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 aluminum 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, 220 VAC 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° 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 molded into the housing for easy reference and permanent position indication. A Manual Override disengagable feature allows manual rotation of valve position with electrical power off.
Bray International, Inc., headquartered in Houston, is a leader and innovator in process control automation, with worldwide manufacturing and distribution facilities. Products include automated and manual 1" through 72" butterfly valves, pneumatic and electric actuators, valve status monitors, electro-pneumatic and pneumatic positioners, solenoid valves and control accessories. For more information, contact Bob Bloem at 13333 Westland East Blvd., Houston, TX 77041. Phone 281-894-5454; FAX 281-894-9499. www.bray.com email: bob.bloem@bray.com
