FleckPistons, Seals & Spacers
2850 & 2850sSeries
The 2850 valve and the 2850S are both available as new production items but have very different internal parts. Be sure to identify which valve you have before ordering parts. See the 2850S blue menu button on the left side of the 2850 valve page.
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Piston Assembly
The picture shows 3 pistons for the 2850 valve. The left side piston with the white plastic end cap is the standard hard water by-pass piston assembly#60105which comes assembled with all piston parts.This hard water by-pass piston will allow untreated water to pass downstream during the 80 minute regeneration cycle, if there is demand. Generally regeneration is set to occur during hours when there is little or no demand. This piston can also be used with a brine cam micro switch to turn off any motorized downstream equipment requiring water, thus eliminating flow.
The piston to the far right with the black plastic end cap is the 2850No Hard Water By-Pass Piston (NHWBP) #60114-01 assembly.This piston will shut off all downstream water while the unit is in regeneration. This can be identified from the front of the valve by seeing the black plastic end cap. The square black plastic spacer fits between the brass casting and the back plate.
The center piston has a white end cap and triangular mounting frame with motor linkage attached. It is the standard2850S piston assembly #61630-00.
Seal and Spacer Kit
The seal and spacer kit for the2850S part #61632is on the left side of the picture with black spacers. The2850 seal and spacer kit #60129 is on the rightwith gold colored spacers. Also pictured is the puller tool that can be purchased or loaned out. For tool operation please call for details. The diameter of the piston is greater in the 2850S than the 2850. The “S” unit has a higher backwash and service flow rate that allows for use on larger tanks.
2900Series
The 2” in/out 2900 has two pistons or drives each covered with its own plastic cabinet one on top of the other. Theupper driveis responsible for the 5 step regeneration only. The bottom drive puts the unit into or out of service. The picture shows the upper white end cap piston assembly#60090-HFwith the seal kit#60121comprised of spacers and seals.
Upper seal kit #61530
Lower piston white end cap hard water by pass piston #61550
Lower piston black end cap no hard water by pass #61555
Lower seal kit #60128
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Upper Drive
The 2” in/out 2900 has two pistons or drives each covered with its own plastic cabinet one on top of the other. Theupper driveis responsible for the 5 step regeneration only. The bottom drive puts the unit into or out of service. The picture shows the upper white end cap piston assembly#60090-HFwith the seal kit#60121comprised of spacers and seals.
Theupper driveseal kit fits in a rather long barrel and can be frustrating when replacing. The gray stuffer and puller tools can be quite helpful in this process. They are for sale and can also be loaned out for the job, be sure and ask about the process. The upper piston end cap is white unless the unit is an up-flow design which has a gray plastic end cap. The up-flow piston is#60106-10. Up-flow regeneration units always begin regeneration with brine draw first, regular down-flow units begin with back wash first.
Lower Seal and Spacer Kit
The 2900lowerseal and spacer kit#60128is pictured with thelowerpiston white end cap #60103. Thelower pistonis responsible for putting the system in service and out of service; when in regeneration or in a stand by situation. Theblack plastic end cap piston #60104through which the gray piston rod travels designates a no hard water by-pass piston (NHWBP)
This black end cap piston will not allow any water to pass downstream while the unit is in regeneration. This NHWBP is used when multiple units are in line or coupled together or in back wash filter valves where no untreated water is allowed downstream during regeneration. The standard hard water by pass piston end cap is white. This white end cap piston will allow untreated water to pass during regeneration if there is a demand. On a single tank softener regeneration is often scheduled to occur during the night or off hours when there is no call for water. The white end cap piston order number is#60103.
The seal kit is comprised of rubber seals and slotted spacers. As the piston travels from one position to another the seals block water passage from ports that need to be closed or open so water can pass through the proper spacer. White or black end cap all use the sameseal kit #60128.The lower seal kit is large enough and short enough that special tools are not needed.
2900S
2900Sis almost identical to the 2900. The upper piston shaft is a bit longer with the upper piston assembly being#61540.
3150Series
The 3150 fleck control valve is a single piston valve. This 2” in/out valve also has a 2” internal distributor shaft that delivers the treated water. The standard hard water by pass piston end cap is white. This white end cap piston will allow untreated water to pass downstream during regeneration if there is a demand. On a single tank softener or backwash filter regeneration is often scheduled to occur during the night or off hours when there is no call for water. The white end cap piston order number is#60106-00.The seal kit is comprised of rubber seals and slotted spacers. As the piston travels from one position to another the seals block water passage from ports that need to be closed or open so water can pass through the proper spacer. White or black end cap all use the sameseal kit # 60131.
The 3150 valve can be ordered with a “no hard water by pass piston” (NHWBP). This piston will not allow any water to pass downstream while the unit is in regeneration.This NHWBP piston #60113-01is used when multiple units are in line or coupled together or in back wash filter valves where no untreated water is allowed downstream.
The white end cap piston and seal kit are pictured with the puller and stuffer tool. The seal kit fits in a rather long barrel and it can be frustrating when replacing. The gray stuffer and puller tools can be quite helpful in this process. They are for sale and can also be loaned out for the job, be sure and ask about the process.
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3900Series
This piston will not allow any water to pass downstream while the unit is in regeneration. This NHWBP is used when multiple units are in line or coupled together or in back wash filter valves where no untreated water is allowed downstream during regeneration. The standard hard water by pass piston end cap is white. This white end cap piston will allow untreated water to pass during regeneration if there is a demand. On a single tank softener regeneration often is scheduled to occur during the night or off hours when there is no call for water. The white end cap piston order number is #60107-00.
The seal kit is comprised of rubber seals and slotted spacers. As the piston travels from one position to another the seals block water passage from ports that need to be closed or open so water can pass through the proper spacer. White or black end cap all use the same kit #60132
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Upper Drive
The 3” in/out 3900 has two pistons or drives each covered with its own plastic cabinet one on top of the other. Theupper driveis responsible for the 5-step regeneration only while the bottom drive puts the unit into or out of service. The picture shows the white end cap piston assembly#60106-00with the seal kit#60131comprised of spacers and seals.
Theupper driveseal kit fits in a rather long barrel and can be frustrating when replacing. The gray stuffer and puller tools can be quite helpful in this process. They are for sale and can also be loaned out for the job, be sure and ask about the process. The upper piston end caps are always white. They can also be for up-flow regeneration models with the #60106-10 piston which has a gray plastic end cap. Up-flow regeneration units always begin regeneration with brine draw first, regular down-flow units begin with back wash first.
Lower Seal and Spacer Kit
The 3900lowerseal and spacer kit#60132is pictured with thelowerblack end cap no hard water by pass#60107-10. Thelower pistonis responsible for putting the system in service and out of service; when in regeneration or in a stand by situation. The black plastic end cap through which the gray piston rod travels designates a no hard water by-pass piston (NHWBP)
9000Series
The 9000 ¾ inch or 1 inch in/out valve is a twin alternating control valve. This valve has an upper piston that runs the regeneration cycle and a lower piston that switches tanks. Like all fleck controls the pistons move through a series of seals and spacers as the water flow is directed to a specific cycle during regeneration. If the seals are worn they can leak from one chamber to another and cause a cycle to not work or constantly flow water to the drain.
The pistons are Teflon coated to improve wear and resist harsh water chemistry. If this coating breaks down it can cause leakage from one chamber to another.
Upper seal kit #60125
Upper piston assembly #60400
Lower seal kit #60421
Lower piston assembly #60401
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9500Series
The 9500 1.5 inch in/out valve is a twin alternating control valve. This valve has an upper piston that runs the regeneration cycle and a lower piston that switches tanks. Like all fleck controls the pistons move through a series of seals and spacers as the water flow is directed to a specific cycle during regeneration. If the seals are worn they can leak from one chamber to another and cause a cycle to not work or constantly flow water to the drain.
The pistons are Teflon coated to improve wear and resist harsh water chemistry. If this coating breaks down it can cause leakage from one chamber to another.
Upper seal kit #60134
Upper piston assembly #60108
Lower seal kit #60133
Lower piston assembly #60109
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