Technical selection
Specifications and configuration
Reference — 558 LC Series Press-In Check Valve
| Parameter | Documented value / configuration |
|---|---|
| Mounting configuration | Press-in cartridge for a plastic housing; metal-to-metal valve seat |
| Part diameter | 5.46 mm |
| Listed flow resistance | 140 Lohms; manufacturer describes higher flow capacity than its standard 558 Series |
| Listed component materials | 303 stainless body, 305 stainless cage, 302 stainless spring and 440C stainless ball; metal-to-metal seat |
| Example part cracking pressure | CLCP5510004S: 4 ± 3 kPa cracking-pressure example in the plastic-housing press-in seriesConditions: scope: One listed part example; not the separate metal-housing insert series |
Manufacturer series reference. Confirm the exact order code, mating parts and stated conditions for the quoted configuration.
Overview
The 558 LC series is a compact press-in one-way valve intended to lower component resistance relative to the maker's standard 558 series.
Construction and interfaces
It has a listed 5.46 mm diameter, plastic-housing press-in mounting and metal-to-metal seat. The main image is the LC-series product photograph.
Selection
Select against cavity geometry, forward-flow pressure budget and reverse-leak criterion; 140 Lohms is a catalog value, not a system rating.
Configuration options
Exact cracking and retention requirements must be attached to an order configuration and housing drawing.
Application limits
Do not transfer pressure capability from metal-housing versions to the plastic installation or claim that the 558 and 558 LC versions are interchangeable.
