The original Copeland Power Valve. This valve contains most of the same internal components and design principles still used today. The coatings are a little better and now there is a 4 year, Zero Leakage limited warrantee but Copeland stood behind its products then and we still do.
Copeland's PV8 series was designed with our Chinese customers in mind. In China, butt weld end connections are the norm and Copeland's coating and delta ring body seal has improved to the point that this valve is more reliable and more cost effective than ever before. The valve comes in butt weld, socket weld and other end connections.
Casting used in the original Copeland/Fisher Power Valve.
The PVS Valve, like the original Power Valve, is still sold today. The cost of manufacture of the original Power Valve was reduced by using bar stock and a preformed mounting flange. However, the internals and the operating principles of the valve never changed. There are still advantages to this design and the old adage, "if it ain't broke, don't fix it." makes it a popular choice for many power plants and engineering companies.
Above are two external photos of Copeland's PV8 Series.Although the components are made in the USA, the color redis in honor of our neightbors to the East who encourage thedevelopment of the new two piece design.
Reduced bore ball valves for high pressure steam applications. Features carbide sealing areas, live-loaded graphite packing and a forged body. Available in ANSI Class 900, 1500, 3000, 3200 and 4500 ratings. Sizes range from 1/2" to 4".
Long-Term Shutoff Integrity: Externally positioned guide bearings helps maintain precise ball-to-seat alignment.
Extended Packing Life: Packing gland followers uniformly energizes the live-loaded Grafoil® packing to extend packing service life. Avoids the side loading common to two-bolt and four-bolt packing followers.
Extra Heavy Duty Blow-out Protection: High-strength Inconel® 718 pins help ensure shaft retention.
High-Pressure Capability: Forged WC9 chrome moly (F22) or carbon steel (A105) body provides superior pressure-retaining integrity in high-pressure power plant applications. All other ANSI B16.34 materials available as well.
Cost-Saving Operation: Shutoff to MSS-SP61 specifications avoids wasteful steam loss due to excessive valve leakage. Valves are also shipped with a Zero Leakage and 4 year limited warrantee.
Superior Wear Resistance: Ball and seat surfaces have been hardfaced with thermally-sprayed chrome carbide for extreme resistance to abrasion. Inconel 718 internals add to operating integrity.
Lighter, Easier to Handle Design: Body offers a significant size and weight reduction over other designs. Proves easier to handle.