In this guide we’ll walk you through everything there is to know about low pressure control valves.
From the basics of how it works to step-by-step repairs and troubleshooting, you’ll gain a solid foundation of knowledge on how to operate and maintain Kimray’s low pressure control valves.
Use the table of contents to skip to different sections of the learning path.
Pneumatic Low Pressure Control Valves can be used for gas and liquid on low pressure separators, emulsion treaters, and other liquid accumulators.
This line of valves is divided into three categories:
Since the internal components and repair processes for these valves are alike, in this video Jeff shows how to repair all three types.
NOTE: Kit sheets can be used for multiple repair kits. You may not have all the components in your kit that are shown on the included sheet. The RHE will not have a 163 or 127.
The (364) gasket is only used if you are also replacing the removeable seat.
NOTE: The 1” full port does not have a removeable seat, so if there’s damage, you’ll need to replace the (2033) body. If the reduced port removeable seat is damaged, it will need to be taken out with a Kimray removeable seat tool (1349SW) and replaced with a new (1349) seat. This part is not included in your repair kit and will need to be ordered separately. If it’s not damaged, continue with the repair.
Kit sheets can be used for multiple repair kits. You may not have all the components in your kit that are shown on the included sheet. The RHE will not have a 163 or 127.
The (364) gasket is only used if you are also replacing the removeable seat.
Repairing the EUA3 is a very similar process to the ABC2 above.
You will need a 7/16” wrench to remove the bonnet bolts, but the rest of the disassembly will be the same as for the Adjustable Double Acting Low Pressure Control Valve.
When assembling the EUA3, there are only a couple of differences:
The rest of the reassembly will be the same as for the Adjustable Double Acting Low Pressure Control Valve.
The 1” full port does not have a removeable seat, so if there’s damage, you’ll need to replace the 2033 body. If the reduced port removeable seat is damaged, it will need to be taken out with a Kimray removable seat tool (1349SW) and replaced with a new 1349 seat. This part is not included in your repair kit and will need to be ordered separately. If it’s not damaged, continue with the repair.
If you have any questions about any part of this repair process or the custom Kimray tools used, reach out to your local Kimray store or authorized distributor.
The Electric Low Pressure Control Valve (E-LO) is designed primarily to control flow of low pressure (<45 PSIG) fuel gas within burner management systems.
The E-LO utilizes a main circuit board and one of 3 module options:
These modules can be changed out to suit your application needs, but it is ESSENTIAL that you turn off all power before doing this or any other work to the E-LO.
Because it is run on low voltage (24V), operators may be tempted to wire in the main board or change a module without powering down the unit. This is a big problem for many reasons, including safety and functionality.
These modules are not designed to be “hot swapped” — or swapped out while power is coming in.
Putting a module in while there is power on the unit will almost inevitably damage it. The surge of electricity can fry its memory and result in it not functioning correctly, or perhaps at all.
If you are experiencing performance issues with the E-LO, like It’s not opening or closing fully, or it’s not responding to an input, the module or main board may have been damaged at some point. If you suspect this is the case, you will likely need to contact your Kimray rep to order a new module or board. You can visually inspect them for damage, though the damage may not always be visible.
Preventative Maintenance should be performed on the E-LO on a regular basis. Under normal conditions, the body will last years; however, you need to inspect the valve seat every 6 months under normal service and conditions.
Under severe service conditions such as sand, corrosion, salt or high pressure drop, inspect more often until a predictable pattern can be established.
During all parts of the assembly, be careful not to damage the module or circuit board by resting the unit on any surface.
For further questions about any of these processes, contact our Product Support team.
If you have any questions about any part of this repair process or the custom Kimray tools used, reach out to your local Kimray store or authorized distributor.
