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MFT (Product)

What is CV and why is it important for a modulating valve? How do I calculate it?
Cv is the capacity of the valve to deliver flow with an available differential pressure (∆P) across the valve. The Engineer of Record typically specifies Read more...
How do I manually override my actuator?
All EF, AF and NF series spring return actuators, and FSAF and FSAFB fire and smoke actuators, have a detachable manual override crank tool that fits Read more...
What is the difference between a spring return, non-spring return, and electronic fail-safe actuator? What are the advantages and applications for each?
Spring Return actuators utilize an internal spring that drives the actuator open or closed on loss of power. Electronic Fail-safe actuators utilize super Read more...
Do all control valves get piped from the return side of coils?
The standard installation practice to safeguard electric actuator longevity is to reduce exposure to external water and excessive ambient heat.  Read more...
What is the replacement for my NF120 US or AF120 US actuator?
The NF/AF series 120 VAC on-off actuators are functionally replaced with the NFBUP and AFBUP in all damper applications and in valve applications using Read more...
How can I mount a damper actuator on a CCV or small butterfly valve?
Only spring return damper actuators can be field mounted on CCV's, or butterfly valves 3 inch and under, with rotary linkage kits purchased Read more...
Can your 3-way valves be used for mixing and diverting?
CCV and HD/HDU/VIC butterfly valves can be piped for mixing or diverting. Globe valves have 2 separate mixing and diverting valve bodies and cannot be Read more...
Are there issues installing stainless steel body valves in a carbon steel piping system?
The Engineer of Record should make decisions regarding valve and pipe material compatibility and the application of dielectric unions.  The Read more...
How do I size a damper actuator?
The "10 questions" method for sizing and selection found in the attachment is recommended.  It takes into consideration the total Read more...
What is a characterized control valve (CCV)?
Belimo’s unique Characterized Control Valve™ (CCV) have a special characterizing disc inside the A port of the valve which gives it an equal Read more...
I want to reprogram my MFT actuator. What equipment & instructions do I need?
There are two ways off programming an MFT actuator.  You can use the ZTH US handheld device and using one of the provided cables you can connect to Read more...
Does Belimo offer NEMA 7/9 Div 1&2 actuators and valve assemblies?
Belimo offers an explosion-proof housing for damper applications only.  For additional information see attached datasheet. The ZS-260 explosion-proof Read more...
How do I troubleshoot my modulating SY actuator?
See attached guide for basic troubleshooting steps if you are experiencing issues with your SY series MFT actuator.  Contact Belimo Technical Support Read more...
How small can a valve be compared to line size?
The golden rule is never reduce the valve smaller than half the line size.  When a smaller valve than the pipe size is installed, pipe reducers have Read more...
I am having problems with my SY actuator. What should I do?
Non -MFT Models: SY products without the MFT on the nomenclature are only used for on/off or floating point applications.  They are only going to use Read more...
Can a –SR or MFT modulating actuator be field wired for On/Off or 2-position control?
All of the -SR and -MFT models (when programmed to 2-10 or 0-10 VDC) (with the exception of the SY Series) can be wired for On/Off or 2-position Read more...
What does Master-Slave wiring mean and when would I use it?
This wiring method is preferred for piggyback applications where actuators are mechanically coupled to a single shaft or linkage. Master-Slave wiring must Read more...
What valves can I use for steam applications?
Maximum inlet pressure along with maximum differential pressure and steam temperature are the most important considerations when selecting a valve Read more...
Where can I get information on Belimo hand held programming devices?
To view information on Belimo hand-held programming devices found the MFT webpage click here. Read more...
Can I mechanically connect or tandem mount more than one actuator on a damper or valve?
YES. This is sometimes referred to as ‘piggy-back’. The preferred method for mechanically linked actuators would be through the use of MFT Read more...
What is the difference between NTC 10K Type 2 and Type 3 sensors?
At 77ºF, 10K ohms is the signal for both NTC 10K Type 2 and Type 3 sensors, but the values are somewhat different for other temperatures per the Read more...
Can I remove or replace my actuator cable?
Cables are installed at the factory and cannot be changed or reattached in the field.  The standard cable length is 3 feet but most actuator can be Read more...
What do the lights on the MFT actuator mean?
MFT actuator series non-spring return and electronic fail-safe include LED's, spring return series MFT actuators are not offered with LED's. Non- Read more...
How do I replace a failed CCV if my actuator is still working?
There are no serviceable parts or repacking kits for CCV's so if they fail they will need to be replaced.  If the failed valve is the older style Read more...
How do I replace a failed actuator on a CCV?
Today’s CCV’s have actuators with an integrated rotary linkage.  The “R” in the actuator part number (such as AFR or LR) Read more...
What is Pressure Independent (PI) valve technology?
PI valves are dynamically balanced delivering the proper flow to the coil over any operating load condition. Overflow and underflow are eliminated Read more...
What accessories work with an FSNF Series fire & smoke actuator?
Classic style NF/AF accessories should be used for the FSNF Series fire and smoke actuators.  These include the following non-direct coupled products: Read more...
Do you make replacement actuators for obsolete Belimo actuators or other brands?
To view replacement actuators for obsolete Belimo actuators or other brands open the Retrofit Module within SelectPro.  Click the Damper or Valve Read more...
Are Belimo valves and actuators serviceable? How do I obtain replacement parts?
There are no serviceable parts or repacking kits for CCV's or butterfly valves so if they fail they will need to be replaced.  Similarly, Read more...
How do I retrofit a globe valve with a failed NV or NVF actuator?
First, the valve size and manufacturer will be needed to determine the required linkage.  Belimo globe valves less than or equal to 2 inches Read more...
What information is needed to select a control valve?
Basic required application information Full flow GPM (or steam lbs/hr capacity)With pressure independent (PI) valves, only the full flow GPM is Read more...
Can the S2A-F auxilary switch be used with non-fire and smoke actuators?
The S2A-F add-on switch is for use only on our fire and smoke actuator models FSAF, FSNF, and new style FSLF with top holes.  They are not intended Read more...
Do you sell repacking or rebuild kits for your globe valves?
Repacking kits are available for all Belimo globe valves and rebuild kits are available for flanged globe valves.  Click here for details Read more...
Is there a damper or valve actuator that is acceptable for outside installations?
Belimo offers factory furnished NEMA 4/4X damper and valve actuator enclosures for most spring return and non-spring return actuators.  To learn more Read more...
How do I install my Belimo UGVL retrofit linkage?
Belimo's adjustable UGVL retrofit linkage fits on most ½" to 2" Globe Valves offering quick and easy installation. Refer to the 2017 Read more...
What is the flow pattern and correct piping for a CCV?
Two and 3-way CCV's  have the characterizing disc on the A port.  The B port is also characterized on 3-way CCV's.  Three-way Read more...
For temperature sensors, do you have a resistance (ohms) to temperature table?
See the table below for typical ohms per temperature for NTC and RTD signal types.  Read more...
Can I get an actuator that will rotate more than 360 degrees?
The only actuator series that is capable of rotation greater than 95 degrees is the 27 in-lb non-spring return LUB(X) series.  It is offered in Read more...
Why won’t my new LRB or AFRB actuator fit my existing CCV?
The most common reason why a new LRB or AFRB won’t fit an existing CCV is that the valve body is an older design and its shallower stem notch hits Read more...
Should steam valves be piped vertical or horizontal?
Steam valves should always be installed on a horizontal steam line, never vertically.  A control valve in a vertical installation has no ability to Read more...
Can the TR24-3 US be wired in parallel?
The TR24-3(-T) US cannot be wired in parallel due to the internal actuator circuitry.  The TR24-3(-T) US utilizes two AC Synchronous motors to drive Read more...
Can I change my spring return damper actuator from fail closed to fail open?
All Belimo spring return actuators can be mounted to fail open or to fail closed upon loss of power based on how the actuator is mounted on the damper Read more...
Do you have flow curves for your CCV valves?
Belimo characterized control valves (CCV) have an equal percentage flow characteristic as shown below.  To obtain a CCV flow curve for a specific Read more...
Is there maintenance for motorized fire & smoke dampers?
There is no maintenance required. No cycling of the actuator is required although dampers should be tested per local codes. Refer to the below schedule of Read more...
Why does the damper close with loss of power?
Belimo spring return, and electronic fail-safe actuators, are designed to fail open or closed when power is interrupted. Power loss unwinds the Read more...
Do you sell replacement UGLK rotary linkages for flanged globe valves?
Belimo does continue to manufacture the rack and pinion style UGLK linkages for 2.5-6 inch two and three-way flanged globe valves.  See attached Read more...
What are the recommended fluid velocity limit for butterfly valves? Is there a fluid velocity chart?
HDU/HD Series: It is not recommended to exceed 12 feet per second through resilient seat butterfly valves.  Velocities greater than 12 fps may damage Read more...
What is the purpose of the adaptation button on your MFT and some –SR actuators?
Depending on the actuator, adaptation is initiated by one of the following a) Pressing the manual override button twice b) clicking the CW/CCW switch Read more...
Can a -3 actuator be used for on/off control?
Non-spring return -3 actuators can be wired for on/off control with a SPST contact. Spring return -3 actuators should only be used for floating point Read more...
What weather shield or NEMA 4 enclosure can I use on a large flanged CCV?
Belimo offers a NEMA 4 enclosure option on Large (Flanged) Characterized Characterized Control Valve (LGCCV) assemblies per below table:     Read more...
What Belimo valves have linear flow characteristics?
The B3L series ball valves are modified linear, and the G2S & G3 globe valves are linear.  Also, the Belimo Energy Valves and ePIV' Read more...
What are your production lead times?
Standard Lead Times (from order confirmation to issuance of tracking number) for Belimo Americas products are as follows: Product Line Expected Read more...
What actuator can I use for 135 ohm control?
Belimo offers several actuators with 135 ohm control suitable for Honeywell Series 90 controllers.  The products must have MFT95 in their Read more...
Why are isolation relays required for 2 position SY actuators wired in parallel?
The reason parallel applications need isolation relays is that the motor uses two sets of windings, one for each direction. When one is energized to turn Read more...
Since the Energy Valve controls the actuator what does the DDC controller do?
The DDC controller's 2-10 VDC output signal is normally the flow setting of the Energy Valve from zero flow (2 VDC) to maximum flow (10 VDC = V' Read more...
Should I use a diode for floating control actuators?
Floating control actuators with ...-3 part number do not need a diode but actuators with ...-MFT part number may need a diode. Most but not all Belimo MFT Read more...
What does Position Control mean for ePIV and Energy Valve, is Valve Position a feedback option?
“Position Control” is a configurable control mode for ePIV or Energy Valves, the other option is “Flow Control”  (i.e. Read more...
What is the difference between fast running and quick running actuators? How can I tell the difference?
The non-spring return actuator product nomenclature includes the letter Q for quick running and C for fast running following the actuator torque letters. Read more...
What does the R and L mean in CMB24-SR-R -L
The CMB24-SR actuator receives a 2-10vdc control signal and is offered in -R and -L models; indicating the “Normal” position of the Z2 & Z3 Read more...
How do I adjust flow on a PICCV valve with KRB24-3?
The KRB24-3 actuator is available on certain bodies of Pressure Independent Characterized Control Valve (PICCV) assemblies (P2050B010, P2050B025, P2050B055 Read more...
What sizes are your Flow Meters?
Belimo currently offers ultrasonic flow meters in size 1/2" - 2" NPT. In the future the line will expand to include larger sizes. For addition Read more...
What is the meaning of the date code?
Currently the date code is printed on the actuator sticker.  Many valves are also date coded using a metal tag or sticker. Current Date Code Format Read more...
Do Belimo globe valves have ASME standard certification?
Belimo flanged valves, specifically G6100C, G6125C, G6150C, G665C and G680C, are iron and are in the ASME B16.1 category. Belimo threaded globe Read more...
Is there a heater available for Fire & Smoke actuators?
The Belimo ZG-HTR can be used with the FSLF, FSNF, and FSAF*A actuators which have metal housings. The heater cannot be used directly on the FSTF or FSAFB Read more...
Are actuators available with 4-20mA feedback?
Only the modulating SY series actuators are available with 4-20mA feedback.  All other Belimo modulating rotary and linear actuators offer voltage Read more...
What are the mounting bolt circles for different SY actuators?
Dimensional information for the SY series four mounting bolts can be found in the attached schematic.  This information is provided to help determine Read more...
What happens to the leaving air temperature (LAT) as coil water flow is reduced with the Energy Valve Delta T Manager?
More information is needed to answer this general question, in particular what sensor is controlling the control valve water flow?  Typically fan Read more...
Is calibration required for the EV / EPIV flow sensor or actuator during or after installation
The Energy Valve and EPIV ship fully calibrated from the factory and do not require further calibration. Read more...
How do I adjust the open and close for FSLF actuator?
The FSLF actuator does not have an external stroke limiting capability. The limit of the stroke if <95 degrees would be dependent on the range of the Read more...
How do I set up my Cambridgeport or Carrier economizer?
Click here for installation videos and documentation. For technical support questions that may arise regarding the Belimo Zip Read more...
What's the default MFT programming code for the PICCV?
The default is code A19, with parameters: 2-10VDC control signal input, 2-10VDC feedback output, and 100 second running time. To view more PICCV Read more...
Is there an extension available for CCV or PICCV valves so that actuators can get above insulation?
Belimo CCV extension kits add 2 inches to the actuator height to accommodate pipe insulation.  They also work on PICCV’s.  If the CCV Read more...
Do you sell pneumatic actuators?
Belimo does not manufacture or sell pneumatic actuators.  For more information on our electric actuators for dampers and valves please visit www. Read more...
Do you have linkage installation instructions for 3-way butterfly valve and SY actuator?
The Belimo butterfly valve webpage includes resources such as a complete butterfly valve technical document and installation instructions that detail Read more...
Can the MFT actuators accomplish floating point control? Or do I need an actuator that specifically does floating point like the LMB24-3-P10-T?
Most MFT models can be programmed for floating point control.  This is common when a feedback signal or future field program changes are desired. Read more...
Do you have spring return actuators?
Yes, we have spring return actuators for control dampers and valves.  Belimo spring return actuators are designed for use in a wide variety of HVAC Read more...
Is ZoneTight QCV & PIQCV available?
Belimo's new pressure dependent QCV zone valve offering is now available.  The pressure independent PIQCV is now available with flow model 0.9 Read more...
How can I update my PC-TOOL software?
The latest update to PC-TOOL, our MFT programming software, can be found on the MFT webpage. Link to MFT webpage Read more...
Where can I find more information on your Multi-Function Technology (MFT) actuators?
A webpage dedicated to Multi-Function Technology support includes: technical documentation, operation and wiring instructions, PC-TOOL software and User Read more...
Do Belimo sensors in the orange box come with a conduit connector?
Yes, all of the orange box sensors come with a ½” NPT conduit adaptor and PG11, M16 or M20 cable gland as standard parts. To reference the Read more...
Can the humidity sensor be used in harsh environments?
When exposed to harsh environmental conditions such as; high ambient temperature and/or high levels of humidity or presence of aggressive gases (i.e. Read more...
What is the difference between a RTD and a Thermistor?
A RTD (Resistive Temperature Device) is made of metal such as Platinum (PT) or Nickle (Ni).  As temperature increases so does the resistance measured Read more...
Does Belimo offer changeover valves?
Belimo does offer valve assemblies for changeover applications.  Changeover valves are used for seasonal changeover from heating to cooling in Read more...
What is the smallest actuator available?
The smallest non-spring (fail in place) damper actuator sold by Belimo is the CMB series actuators.  These actuators provide 18 in-lbs of torque. Read more...
Are only Belimo actuators orange?
Belimo actuators are typically orange but there are some manufacturers of electric as well as pneumatic actuators that use black and orange colors.  Read more...
Does Belimo offer a three way PICCV or EPIV?
The Belimo pressure independent PICCV and EPIV are available in two way configurations only. A three way valve for coil control is traditionally used in a Read more...
How do I rebuild a Belimo globe valve?
If your Belimo flanged globe valve is leaking or isn't performing optimally it might be time to rebuild it. Belimo offers rebuild kits for many Read more...
What replaces obsolete BLF24 & BLF230 European Fire & Smoke Actuators
The BLF series fire and smoke actuator series has been discontinued. The BFN series is the new replacement. Model cross reference below with details and Read more...
What weather shields can I use with a threaded CCV/PICCV series valves?
Model ZS-CCV... series weather shields are designed as a water tight enclosure to provides moderate protection when mounted outdoors for Characterized Read more...
Can a 2-way globe valve be converted to a 3-way globe valve?
No.  Belimo globe valve internal components are different for 2-way and 3-way valves. The bottom plate on a 2-way flanged globe valve cannot be Read more...
How do I limit damper rotation to less than 90 degrees?
Rotation can be limited in two ways, mechanically or electronically. To limit the stroke mechanically, an angle of rotation limiter will need to be Read more...
I cannot mount my actuator on the damper shaft. What are my options?
See the Belimo Mounting Methods Guide section 3 for different ways to non-direct couple damper actuators.  Some of the linkage and actuator part Read more...
How do I foot mount my AF series damper actuator?
A ZG-118 universal mounting bracket or ZG-AFB118 crank arm adapter kit is needed to foot mount a new generation AFB/AFX, NFB/NFX, or FSAFB24-SR damper Read more...
What is the NEMA Rating on Belimo Flow Meters?
Belimo FM series ultrasonic flow meters are rated to UL Type 1, NEMA 1. Enclosures classified as NEMA 1 are intended for indoor use and provide some Read more...
Can I reset the ZIP Economizer to its original Factory Settings (Virgin State)?
The ZIP Economizer can be reset to original factory setting if the software is version 2.0 or higher. This feature is not available on the original Read more...
How do you determine Energy Valve Cv
Standard pressure dependent control valves are selected for an application with a specified Cv that is used to determine the full flow of the valve at a Read more...
Does Belimo sell valves for pools or spas?
Review the chloride content of your pool or spa application.  Belimo valves are designed for HVAC applications with water containing low levels of Read more...
Would there be imbalance when the damper shaft is smaller than the diameter of the actuator clamp?
Belimo damper actuators are designed for mounting to a range of drive shaft diameters and will be “centered” with a published diameter.  Read more...
Is a balancing valve required when using an energy valve or PIV?
Belimo pressure independent valve (PIV) offerings include electronic pressure independent series (Energy Valve and ePIV) and mechanical pressure Read more...
How do I retrofit my Air Balance pneumatic damper?
For an instruction sheet on replacing Air Balance pneumatic actuators with Belimo FSxx Series fire & smoke actuators see attached. For general Read more...