Safety Heads/Rupture Discs - Safety Heads and Rupture Discs offer an economical and dependable relief port to guard against system over-pressure.

Autoclave Engineers offers universal safety heads in three series compatible in orifice size and maximum pressure rating with Autoclave Low Pressure, Medium Pressure and High Pressure valves, fittings and tubing.

Autoclave Low Pressure Series SS: Autoclave SpeedBite Ermeto-type tube connection, maximum rupture pressures to 15000 psi (1034 bar).

Autoclave Medium Pressure Series CSX: Autoclave Medium-Pressure coned-and-threaded tube connection, maximum rupture pressures to 20000 psi (1379 bar).

Autoclave High Pressure Series CS: Autoclave High Pressure coned-and-threaded tube connection, maximum rupture pressure to 110000 psi (7584 bar).

The 3/16F style features a 3/16” blow-out diameter and a flat seat which can be ordered in pressure range from 200 to 27000 psi (13.8 to 1862 bar).

The 1/4A style features a 1/4” blow-out diameter and an angular seat which can be ordered in pressures from 900 to 60000 psi (62 to 4137 bar).

The 1/2F style features a 1/2” blow-out diameter and a flat seat which can be ordered in pressures from 500 to 10000 psi (35 to 690 bar).

ASME Safety Head - Autoclave now has an ASME Section VIII Div. 3 safety head assembly rated to 115000 psi (7929 bar). Contact the factory or your local sales representative for details and ordering information.

Materials and Features

• Non-rotating double-cone plug design avoids galling and scoring of safety head or connection during installation. Reduces likelihood of leakage.
• Interchangeable hold-down rings permit use of several different sizes and types of rupture discs in a single safety head. Accommodates discs with rupture pressures as low as 90 psi (6.2 bar) and ranging to 60000 psi (4137 bar) and above.
• Installs in any standard Autoclave coupling, elbow, cross or tee.
• Cold-worked Type 316 SS body hold down gland and plug, all series.
• Hold down rings are corrosion resistant stainless steel.

Consult Local Sales Representative for safety head assemblies rated above 60000 psi (4137 bar).

Ordering Information
To order an Autoclave Universal Safety Head, use the catalog order number from table. ADD THE SIZE OF THE RUPTURE DISC YOU WANT AS A SUFFIX TO THE CATALOG NUMBER; SUCH AS CS6600-1/4A. Then order desired rupture discs from rupture disc section. (This is important since the disc size determines which hold-down ring will be furnished with the safety head.) Note: Plug is included.

Note: Interchangeable hold-down rings permit use of several different sizes and types of rupture disc in a single safety head.

Maximum pressure rating is based on the lowest rating of any component.
Actual working pressure may be determined by tubing pressure rating, if lower.

All dimensions for reference only and subject to change.
For prompt service, Autoclave stocks select products. Consult your local representative.
All general terms and conditions of sale, including limitations of our liability, apply to all products and services sold.

Gauges - Pressure gauges are offered for use in low, medium and high pressure systems. Instrument quality gauges are available to pressure of 80,000 psi (5115.7 bar).

Autoclave Engineers Pressure Snubbers provide protection to gauges and instrumentation from pressure surges, pulsation and shock. The unique snubber design provides superior instrument protection while not compromising instrument accuracy or reaction time. This is accomplished by the use of existing technology from our excess flow check valve with additional design features.

When sudden flow is seen, the poppet will rise, blocking the pressure surge and a small bleed hole in the poppet will allow pressure to slowly equalize. When the pressure is equalized, the poppet will then drop back down allowing normal flow to the gauge. A filter is used to prevent the hole in the plug from becoming plugged. The snubber must be mounted in the vertical position as indicated on the unit.

Snubbers are offered in 316SS as standard, with either male, female or male/female connections in 1/4" and 3/8" sizes. Optional materials available upon request.

All general terms and conditions of sale, including limitations of our liability, apply to all products and services sold.