Parker Veriflo – 944LSFS8FF – High‐Purity Diaphragm Valve, 1/4″ Face‑Seal Female

The Parker Veriflo 944LSFSFF (944LSFS8FF) is a high‑purity stainless steel diaphragm valve engineered for semiconductor-grade, vacuum, and ultra–clean fluid applications. It utilizes a ¼‑turn lever for manual control and features PCTFE sealing for excellent chemical compatibility.  

Key Features:

• Model: 944LSFSFF (Parker P/N 944LSFS8FF, 45200840)

• Valve Type: 2‑port, manual diaphragm valve with ¼‑turn lever actuation  

• Body Material: 316L stainless steel; ideal for high‑purity and vacuum use  

• Seat & Diaphragm: PCTFE valve seat and elastomer diaphragm; suitable for aggressive media  

• End Connections: ¼″ face‑seal female (swivel) x ¼″ face‑seal female (swivel)  

• Cv: 0.18 (flow coefficient)  

• Toggle Handle: Enables quick opening/closing with a bracket option for lock‑out/tag‑out  

• Performance: Cleanroom‑compatible, vacuum‑rated, and suitable for high‑purity processes