The 521-Y adjustable limit stop screw is a replacement adjustment component used in AqMatic and AquaMatic K521 diaphragm valve assemblies. This part is used with limit stop configurations that control or restrict valve opening position during operation.
Limit stop assemblies are commonly used in process control, filtration, and water treatment systems where valve travel adjustment is required for flow regulation or operational tuning. The 521-Y screw is installed within compatible K521 limit stop assemblies and may be replaced during maintenance, rebuilds, or repair of worn adjustment hardware.
This component is part of the broader K521 Parts & Kits collection and may be used alongside related limit stop repair kits, diaphragms, and internal valve components. Additional valve servicing information is available in the K52 valve documentation and the V42 documentation library
$33.89
| SKU | Model Number | Part/Kit |
|---|---|---|
| 1075058 | 521-Y | Screw, Limit Stop, ADJ |
| Weight | 1 lbs |
|---|---|
| Dimensions | 8 × 6 × 4 in |
