NEWS

NEW HOSCO PRESSURE RELIEF VALVE SAVES PRODUCTION SHUT DOWNS AND COST

Hosco Finishing Systems Components, Livonia, MI, has introduced the new Hosco BPV-150 Mechanical Pressure Relief Valve that relieves paint and solvent circulating system pressure in the event of system over-pressurization.  This cavity-free and silicone-free valve can replace expensive “rupture disk” or conventional relief valves.  As opposed to the rupture disk system the Hosco valve opens and closes automatically when required and will not shut down and halt production.  Conventional pressure relief valves are often connected by an offset tube away from the fluid line.  This can result in the fluid, particularly paint, to become stagnant leading to agglomeration and sedimentation which can eventually cause a malfunction, damage the safety valve or break loose into the paint system creating a paint finish defect on the finished product.

The Hosco valve is designed to be located directly on the supply line.  Should a pressure switch fail to shut off the pump before pressure reaches 300 psi, the pressurized fluid will push the face of the valve causing its spring to compress, allowing the fluid to pass through to the by-pass return line thereby relieving the pressure in the supply line.  The by-pass return is connected to the supply tank or drum.  When the supply line pressure drops below 300 psi the valve will close returning the system to normal operation.

There are several key features of the Hosco valve.  First, the top of the valve is equipped with a vent stone that allows it to move back and forth freely without fighting compression or vacuum.  Second, being positioned close to the circulating main line area, Hosco’s cavity-free design of the valve/seat eliminates any dead flow areas as found in conventional mechanical valves where paint could settle and produce paint finish dirt defects.  In addition, because it is a mechanical valve that requires no service, over-pressurization will not result in system shut downs as is necessary with servicing ruptured valves.

The Hosco BPV-150 Valve assembly comes complete with a BPV-150-A 1.50" adapter and installation manual.  A 2" main line adapter is also available as an option in lieu of the 1-1/2" tee.

Hosco manufactures a full line of delivery systems components for paint and finish application, including specialty & standard fittings, spray gun accessories, filters, swivels and extensions,  paint and air hose lines along with hose connectors, clips and spring guards, tees and manifold fittings, check and ball valves, and bulkheads.  These products are certified silicone-free and feature “cavity-free” designs that eliminate collection points for dirt to deliver contaminate-free paint.