Parker Instrumentation (UK) has launched a new series of non-return valves. The new Hi-Check valves employ a high integrity two-piece body with minimal leakage paths, and will accommodate pressures up to 10,000PSI. Designed specifically to combine a high flow rate capability with a low pressure drop, the valves are available with a wide choice of connections, body and seal materials to suit a diverse range of media. The new Hi-Check series is suitable for both fluid and gaseous applications. Hi-Check non-return valves (NRVs) are available fabricated from 316 stainless steel, duplex or monel, and offer a choice of 1/4, 3/8 and 1/2inch A-LOK (twin ferrule) or CPI (single ferrule) compression tube fitting connections, or female NPT threads.