Jerguson No. 70BL and 70XL Series Valves are designed for use with flat glass gages, instrument piping and for other applications requiring a rugged, lightweight valve. Pressure and temperature ratings to 600 lb. ANSI flange standards or manufacturer’s ratings.
Low Emissions Packing: All Jerguson® Series 70BL™ & 70XL™ Safety Ballcheck Valves are now provided with low emissions packing and certified to API 624 as a standard.
OS&Y + Backseating Stem: The yoke supports the stem away from the valve body so the threaded portion of the stem is unaffected by heat and does not come in contact with process fluids. The stem has a backseating area which protects the packing from the fluid.
Renewable Seat: The seat may be removed or replaced with a 5/8″ socket wrench. Union Gage Connection: Nos. 74BL and 77BL are furnished with a union gage connection which allows a top and bottom connected gage to be turned to any desired angle for convenient visibility. It also makes possible the removal of the gage without removing the valves – a feature which saves time when gages must be cleaned or serviced.
Offset Pattern: Nos. 76BL and 77BL valve bodies are designed so the gage and drain connections are offset 7/8″ from the centerline of the vessel connections. By removing the plugs, the interior of a top and bottom connected gage glass may be swabbed without removing the gage.
Safety Shut-Off: All No. 70BL Series Valves are equipped with a stainless steel ballcheck upstream from the seat which instantaneously shuts off flow of medium being gaged in case of gage glass breakage.
Brochure: Series 70BL-XL Valve Brochure
Drawings: 73BL Safety Ballcheck Valve