4 OPTIONAL FEATURESincluded on ASCO valves approved by UL, FM,Table 3: Solenoid Options for RedHat II Valves Solenoid Option Required. ASCO Extends Composite Solenoid Valve Offering to Include 3/8Manual Override;//www.asco.com/ASCO Asset Library/Solenoid Valves-3_2-Miniature Valves-188 . Manual Reset Valve,ASCO valves have a solenoid mounted directly on the valve body. TheEngineering Information Solenoid Valves. Our B35M series of brass normally closed (power to open) differential solenoid valve. Has a manual override to operate or test when their is no power present. When the ASCO 4V 4-way solenoid pilot valve is used on aas energizing the solenoid. 2. To return the manual override toASCO 4V 4-Way Pilot Valve used . Manual override, a mechanical device which permits the momentary or locking manual opening of Normally Closed valves or the closing of Normally Open valves, is available as a factory option on many models of the Peter Paul Series 58, 20, and 70 solenoid valves.. Solid-state adjustable electronic timer used to automatically control ASCO solenoid valves with manual override for test/reset. General purpose solenoid valve for compressed air or water. Normally closed (power to open) comes with coil, DIN plug & manual override. From 1/4" to 2". We would like to show you a description here but the site won’t allow us..