I came across a very interesting and talented teacher. His name is Abel and he calls himself the Control freak. Check out his HVAC controls training video on understanding PID control.
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Gate valves are rather simple valves that should be used as only open/close valves. Media such as steam going through the gate of the valve not fully open will cause a restriction through the valve thus increasing the velocity of the steam going through the valve which will eventually cut through the valve’s “gate” and render the valve useless.
The newest addition to the Belimo family features ground breaking ‘piggy-back technology’ decreasing everything from insillation, to mounting time. The Belimo EF Actuator is proven to simplify wiring while reducing material costs. Read More
Real nice video on rebuilding a Johnson Controls pneumatic valve. Stromquist and Company has Johnson pneumatic valve repair parts in stock. Give us a call in our Florida or Georiga branches for your pneumatic valve repair parts.
Johnson Controls has introduced a new series of electric spring return actuators (VA9208 and VA9203) that are very versatile and a great choice for ball valves. The new series features just 2 actuator models that cover all ball valve applications from 1/2″ to 2″. This streamlined approach to actuator selection and mounting makes it much easier on building engineers and installing contractors. Read More
When it comes to actuators and control valves it is hard to find anyone better than Belimo. Yes Belimo, the company that Read More
Valves and actuators play an integral part in the proper functioning of HVAC systems. When properly installed and functioning correctly they boost the performance and efficiency of integrated building technology. But like with any equipment, there comes a time when valves and actuators need to be replaced for a variety of reasons.
Damaged linkages and/or actuators lead to poor functioning of the HVAC system, which results in loss of energy efficiency, consumer comfort, time, and labor. Replacing a valve along with the actuator, or trying to determine how to fix an airside linkage, is not always a sensible solution. Taking a system off-line to replace various components is not only laborious, it’s expensive. Facilities can lose thousands of dollars a day during maintenance shut-down. With Belimo’s retrofit solutions, this problem goes away. Valve and damper applications can be quickly and conveniently restored without any interruption in service. In fact, entire systems can often be updated in a day. A poorly functioning or even non-functioning system can be transformed into a high functioning, more efficient system.
Belimo provides many retrofits that are compatible with all major control systems, so there is no need to replace other system controls. MFT Technology is also available and can be re-programmed to suit your controller needs with just one MFT model actuator.
If it’s time to replace any actuators or valves in your building or plant, consider a retrofit solution from Belimo. Someone from Stromquist, along with Belimo, will be glad to assist you with the change.
Read any Honeywell catalog on control valves and most likely you will end up with red eyes and possibly a bald spot on top of your head from scratching it in frustration.
While I was in the Orlando office the other day Pat Marley took a call from a client asking how to mount his Belimo TF series actuator to his Belimo ball valve using the WTF mounting adaptor kit. Sadly the Belimo WTF mounting adaptor kit comes with no instructions on how to undertake this proceedure. Pat, being Pat using the speaker phone walked the client through the mounting proceedures and was kind enough to walk through the installation again for my camera also so we could present this article to you… our clients.
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I hope this series of photographs takes the mystery out of installing this Belimo actuator to the Belimo ball valve. At Stromquist and Company we will continue to take the “MYSTERY” out of controls for you. If there are any more controls mysteries we can solve for you give us a call in Atlanta at 1-800-241-9471 or in Orlando at 1-800-638-7829.
The Honeywell T775 Series stand alone controllers have now been on the market for several years. This diverse controller offers the technician a multitude of installation options on one small package.
This controller that stands 8 inches wide by 4 inches wide can be mounted anywhere within 1000 feet of its sensor location and be purchased as a standard enclosure or a NEMA 4X enclosure.
The T775 has an EEPROM that saves all values entered. The date and time values are retained for 24 hours after power loss. After power loss of more than 24 hours values may need to be reentered.
IMPORTANT: If a high limit set point is entered into a T775 controller this value is IRREVERSIBLE !!
Voltage: 24/120/240 note: cannot be used for DC voltages
Set Point Range: -40 to 248 F
T775A and B models: relay outputs from 1 SPDT to 4 SPDT (no analog outputs). Sensor inputs 1 to 2. Floating outputs 0-to 2
T775M models: Modulating with analog outputs of 2-10Vdc or 0-10 Vdc or 4-20 mA or Electronic Series 90. Relay outputs from 0 to 4 SPDT. 2 sensor inputs
T775R models: RESET OPTION.. 0 to 2 analog outputs 0 to 4 SPDT relay outputs. 0-2 floating outputs.
Sensors: update display and controller every 1 second
Accessories:
C7031D2003 5 inch immersion sensor with well
C7030B1009 wall mount room sensor
C7100D1001 12 inch Duct Averaging Temperature Sensor
When the need for a standalone controller presents itself think Honeywell and let Stromquist and Company help you select the right controller for your needs. Give us a call… Atlanta 1-800-241-9471 or Orlando 1-800-638-7828
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