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Jerguson® Series 70™ Safety Ballcheck Valves

Jerguson No. 70 Series Valves are designed for use with flat glass gages, instrument piping and for other applications requiring a rugged valve.  Pressure and temperature ratings to 900 lb. ANSI flange standards or manufacturer’s ratings.

  • API 624 Certified as Standard

  • Regrindable, renewable seat

  • Bolted bonnet

  • Backseating stem

  • Built to ANSI, API Standards

No. 70 Series Valves

The series consists of the following valves:

  • No. 73 – straight pattern with female NPT gage connection

  • No. 74 – straight pattern with union gage connection

  • No. 76 – offset pattern with female NPT gage

  • No. 77 – offset pattern with union gage connection

Standard Features:

OS&Y + Backseating Stem: The yoke supports the stem away from the valve body so the threaded portion of the stem is unaffected by the heat and does not come in contact with process fluids.  The stem has a Backseating area which allows repacking the valve under pressure.

Renewable Seat: The seat may be renewed by removing the seat with a 5/8″ socket wrench.

Union Gage Connection: Nos. 74 and 77 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 the possible removal of the gage without removing the valves – a feature which saves time when gages must be cleaned or maintained.

Offset Pattern: Nos. 76 and 77 valve bodies are designed so the gage and drain connections are offset 7/8″ from the centerline of vessel connections.  By removing the plugs, the interior of a top and bottom connected gage glass may be swabbed without removing the gage.

Note: Safety ballcheck not included as standard feature; must be specified.

series 70 table.JPG
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