Specializing in the manufacture of metering pump accessories. Top Valve - backpressure/anti-siphon and pressure relief valves, Accudraw - Calibration cylinders in Poly, PVC and Glass.Accu-Pulse - pulsation dampeners, plastic and alloys, pressures to 300#. PFS Injection Quills and corporation stops - plastic and alloys, std. and custom lengths.Accuvent - automatic degassing valves for Sodium Hypochlorite and Hydrogen Peroxide metering applications.