Pentair Pumps/Filters 2" Slip x 2" FBT Half Union, Qty 2 (42001-0402Z) defilters A part like this is

A part like this is useful because it helps restore the original function and fit of the assembly without requiring a broader equipment replacement

Improves service accuracy and connection reliability

Praher Lid Assy [2" Blk 125 GPM] (E-50-S2B) is a genuine-style replacement part from Praher Plastics for fittings & valves: multiport valves applications

Pentair Challenger

Pentair Pumps/Filters 2" Slip x 2" FBT Half Union, Qty 2 (42001-0402Z) defilters A part like this isPentair Half Union Pkg, Qty 2, Pentair Pumps Filters, 2"S x 2"FBT (42001 0402Z) is a replacement union or union related fitting for compatible Pentair pool and spa plumbing applications. Unions make equipment easier to install, service, and remove while maintaining a secure plumbing connection. Use this part when a union, adapter, nut, or related connection is cracked, leaking, stripped, or being replaced during plumbing service. Confirm thread style,