Fisher 161 Series pilots are mainly used in natural gas, air, or other non-corrosive gas applications. For applications that have high-pressure drops, using a Type 161AYM or 161EBM monitor pilot will increase the accuracy of the regulator.

Type 161AYW pilot is a direct-operated monitoring regulator pilot with quick dump bleed and diaphragm casing tapped 1/2 NPT for control line connection