■ Zone valve box shall be Silbermann series.
■ Each recessed/exposed zone valve shall consist of a steel valve box
constructed of 1.5 mm steel sheet, complete with a backed enamel
finish RAL 9016, which can house single or multiple shut-off ball
valves with tube extensions.
■ Valves shall be a 3-piece forged brass and a 4-bolt design, bronze or
brass body, stem, ball bolts, and nuts shall be made of stainless steel,
double seal, full port union ball type, with Teflon (RPTFE) seats and Viton
seals, with a pressure rating of 4080 kPa (600 psi) or 40.8 bars.
■ Valves shall be operated by a lever-type handle requiring anly a quarter
turn from a fully opened to a fully closed position. All valves shall be
equipped with type “K” washed and degreased copper pipe stub
extensions of sufficient length to protrude beyond the sides of the box.
■ All pipe stub extensions shall be supplied with suitable plugs or caps to
prevent contamination of the assembly prior to installation.
■ Each valve shall be supplied with a medical gas identification label.
■ Valves shall be available with or without line pressure gauges, as
required. Gauges, shall be 50 mm diameter.
■ Pressure gauges shall read 0-1100 kPa (0-11 bar) for all gauges except
Nitrogen, which shall read 0-2500 kPa (0-25 bar), and Vacuum, which
shall read 0-100 kPa (0-760 mmHg).
■ There are two front options: an aluminum door or a pull-out removable
window.
