Safety Relief Devices – Saf-tee™ relief devices can be used with HOKE sampling cylinders as an inexpensive safety device or as a pipe size adapter for connecting valves in the make-up of cylinder assemblies. Two basic models are available to satisfy most pressure ranges. Spring relief models are recommended for applications where re-closure is required. Rupture Disc models are supplied with a pre-bulged rupture disc which provides excellent resistance to a broad range of hold-down plug and rupture disc to prevent damage due to torque transmission during assembly. A safety screen minimizes fragment release through the plug vents. The maximum operating system pressure should be limited to 80% of the nominal rating of the rupture disc for static operating pressure and ambient temperature. It should be limited to 70% if pressure pulsations occur or used at elevated temperature. The burst tolerance is within the ASME code guidelines

Cylinder Valves –
1) 1700 Series Heavy Duty Cylinder Valves Heavy duty, 6000 psig compact line of 316 stainless steel and Monel® forged body globe pattern valves features an integral bonnet suitable for ¼ ˝ and 3⁄8˝ NPT ended cylinders.
2) 1900 Series Cylinder Valves This durable line of angle pattern valves features a low profile shrouded handle which protects the valve against damage. Dyna-Pak TFE wafer packing provides a leak tight seal with low operating torque even at 6000 psi (414 bar) pressure.
3) 2400 Series ½ ˝ Cylinder Valves 2400 Series 316 stainless steel, forged body angle pattern valves, come with a union bonnet for increased safety and ease of maintenance. Available with pressure rupture discs or spring relief devices as an integral part of the valve.
4) 3700 & 3800 Series Cylinder Valves The 3700 & 3800 Series, 5000 psig forged body cylinder valves are
supplied in stainless steel for cylinders with 1⁄8” through 3⁄8” NPT threads.