Industrial Actuator Control Valve Assemblies
Industrial Actuator Control Valve Assemblies, also called VA (Valve Actuator) Assemblies, are popular methods to use in the process heating and control engineering industry. This Ignition Point Newsletter July 2021 article will highlight industrial news, hyperlinks to combustion products to purchase, and specific information that will help keep your application running smoothly. Take a moment to read this article before contacting us. Thank you in advance.
Photos of Industrial Actuator Control Valve Assemblies
Honeywell Modutrol Actuator with Eclipse Butterfly Control Valve
Honeywell Modutrol Actuator with Siemens VKG Butterfly Control Valve
Siemens SQM4 Actuator with Eclipse Butterfly Control Valve
Siemens SQM4 Actuator with VKG Control Valve Assembly
Supply Chain Shortages End-of-Life Consolidations Result in Challenging Deliveries
Honeywell Modutrol IV actuator motors (“Mod Motors”) are widely used for the control of air and gas in combustion systems. Obsolescence and global supply chain issues have focused the demand on a short list of models. Demand is quickly consuming the available units.
At Marshall Nelson & Associates, we keep a 6-month supply on hand, but even our inventory is getting low. If the ‘Mod Motor’ you need is not available, we are glad to help cross reference a direct replacement Modutrol motor or an alternate for emergencies.
Basic Control Valve Substitution Options
Controls valves are critical for the operation of thermal processes. These photos above provide a visual diagram of some basic control valve and actuator substitutions; useful info when a direct replacement or problem situation arises. Marshall W. Nelson & Associates builds these VA Assemblies and has others ready-to-order immediately.
Before You Contact Us, Collect Answers to these Questions
QUESTIONS
Pipe Size?
Actuator Voltage?
Control Signal?
Position Switches?
Shaft Type for crank arms?
TYPICAL ANSWERS
Example: 2″ NPT
Example: 120V AC
Example: 4-20 ma
Example: Low Fire Aux Proving
Example: 3/8″ square
There are many possible mounting arrangements, with integral butterfly valves or linkages, in gas valve train assemblies. When contacting us, provide a picture of your mounting arrangement, to save time in identifying options.
Shop Products Links
Eclipse Butterfly Valve and Siemens SQM4
Use the 201-1315 Bracket and 200-45427 Crank Arm with an SQM4 Actuator with a 3/8” square shaft. The bracket will mount onto the mounting plate on the Eclipse BV. Linkage arm and swivels are available if needed (201-1319 and 201-13191 respectively).
Honeywell Modutrol and Siemens VKG
Use the 201-1317KW Bracket Kit to mount a Modutrol Actuator onto the Siemens VKG butterfly valve. This bracket will also work with the Dungs EMx actuators and may be adapted to other if needed.
Siemens SQM4 and VKG Valve Assembly
A full replacement changes the system from a Linkage to a Direct Coupled arrangement. Direct Coupling reduces hysteresis in the control loop, reduces potential for a loose connection and minimizes opportunities for unqualified adjustment. Purchase Ready-to-Order SQM4 VA Assemblies
Let us help you find the best actuator for your application. We work with many manufacturers and can assist you with an evaluation of your process application.
Shop Products
Honeywell Modutrol IV Actuators / Eclipse Butterfly Valves
Siemens VKG Butterfly Valves and SQM4 Actuators / Dungs EM Actuators
Honeywell KromSchroeder IC Actuators and BVG/A/H Valves
Maxon CV butterfly valves (now obsolete) / Maxon Smartlink DS, CV and MRV
Honeywell V51E (now obsolete) / Honeywell Eclipse PRA [replaced with the Fireye Programmable Rotary Actuators (PRA)]
