Technical selection
Specifications and configuration
Reference — FITOK CH floating-seal fixed-cracking check valve series
| Parameter | Documented value / configuration |
|---|---|
| Documented construction | Floating seal design intended to reduce contamination effects on sealing; fixed cracking-pressure choiceConditions: scope: Manufacturer series; floating seal is not proof of compatibility with any coolant particles or additive |
| Listed nominal cracking choices | 0.02 to 1.7 barConditions: scope: Nominal selection choices; actual and reseal values vary by chosen spring |
| Manufacturer max working pressure | up to 414 barConditions: scope: Manufacturer series maximum; not a site rating or installed duty |
| Listed temperature span | -12 to 204 degCConditions: scope: Check exact pressure-temperature and seal-material limits before selection |
| Listed tube and thread end options | CHSS-FL4 1/4 in and CHSS-ML6 6 mm FITOK tube-fitting examples; NPT-threaded variants are separately listedConditions: scope: Examples only; pressure rating may be limited by selected end connection |
| Listed body and seal construction | 316 stainless-steel body with FKM bonded poppet and O-ring in the catalogued constructionConditions: scope: Catalogued material construction; verify exact order code and coolant compatibility |
Manufacturer series reference. Confirm the exact order code, mating parts and stated conditions for the quoted configuration.
Overview
This CH-style check valve is a candidate for a liquid line requiring a specified one-way-flow opening point. The photographed item is a manufacturer reference with tube-fitting ends, not proof of a stocked part or tested site-supplied coolant assembly.
Construction and interfaces
The manufacturer's CH description uses a floating seal intended to reduce contamination effects on sealing. The pictured metal body and two compression ends show the series geometry, but not the actual seal elastomer, bore or spring selection.
Selection
Choose the nominal cracking-pressure option from the actual available configuration and distinguish that value from the opening tolerance and reseal requirement. Check flow direction, pressure loss and installation envelope for the selected valve and coolant.
Configuration options
The catalog presents several spring settings and end/material choices across the series. It does not establish that every body, seal, connection and setting combination exists; specify the manufacturer order code or a controlled equivalent requirement.
Application limits
The floating-seal description is not permission to run contaminated coolant without filtration or a sealing test. Maximum pressure and listed temperature span are separate series statements and do not define a simultaneous operating point.
