Noshok's 800/850 Series Bleed Valves relieve process pressures trapped between a shut off valve and an instrument
Noshok 800/850 Series Bleed Valves provide a convenient means to relieve process pressures trapped between a shut off valve and an instrument.
The 800/850 Bleed Valves feature an integrated single-threaded body for insertion in a vent port. These Bleed Valves provide shutoff to a small bleed hole located on the side of the hex that vents the process media to the atmosphere. They also feature a body-to-bonnet, metal-to-metal seat below the bonnet threads, isolating them from the process media. The design incorporates a dovetail feature that supplements the body-to-bonnet, metal-to-metal seat, which extends the pressure range of the valve without restricting the flow.
These valves are available in electroless nickel-plated 12L14 steel, electropolished 316 stainless steel and 360 brass. All bleed valves are equipped with a Viton O-ring and Teflon backup ring below the stem threads to protect against corrosion and galling.
Their stem threads are rolled for greater strength and ease of operation, and they have a maximum pressure rating of 10,000 psi for steel and stainless models, and 6,000 psi for brass models. All Noshok valves are 100% helium leak tested to 1 x 10-4 ml/s for guaranteed performance and reliability.