Fisher Controls instruction manual, courtesy of RMC Process Controls & Filtration, Inc. & www.RegulatorParts.com. Repair kits, orifices, disc holders, springs, diaphragms, relays, tubing, bourdon tubes & much more, all in stock & ready to ship today. We stock an extensive inventory of Fisher regulators, controllers, valves & replacement parts, as well as gauges, relief valves, 316SST tube fittings, tubing, & more. More than 8,000 assemblies & over 12,000 parts in stock! Contact us today at Sales@RegulatorParts.com or 1-800-523-4055. Individual, reseller, quantity, wholesale, & O.E.M. manufacturing discounts available- Distributorships still available to qualified companies and individuals.