- Corrosion resistant plug
Plug materials resist corrosion and prolong seat life. Available materials are as follows:
- Bronze (½" - 2" only)
- Electroless nickel plated cast iron (2½" - 4" valves only)
- Double-seal for tight shutoff and safety.
A resilient seal molded into a groove in the plug face assures dead-tight shutoff on liquids and gases without the use of sealing lubricants. When the plug is closed, the resilient seal is compressed against the seat. The metal on the plug face also makes contact with the metal seat to provide a second seal for safety. Gas industry fire tests showed that this second metal seal provides nearly bubble-tight shutoff with the resilient seal burned away.
- O-Ring stem seal
A variety of stem seal materials provides maintenance-free sealing that matches valve performance and assures long life and reliability.
- Corrosion resistant bearings
Permanently lubricated bearings in the upper and lower plug journals resist corrosion and assure easy operation without lubrication. And, operation is just as easy whether the valve is operated once a day or once a year.
- Corrosion resistant seal
A plastic seat coating provides extra corrosion resistance to minimize plug wear.
- Meets ANSI 125 lb. standard
- Body walls and end connections conform to all applicable ANSI 125 pound standards.
Valves meet MSS standards in ½" and ¾" sizes where ANSI standards are not available.
- Choice of end connections
A complete choice of end connections includes screwed, flanged, Dresser and Victaulic valve. A complete listing of availability for each size and FIG number is shown in the ordering section.
KEY PORT VALVE® eccentric action and resilient seating assure lasting dead-tight shutoff. As the eccentric plug rotates 90 degrees from open to closed, it moves into a raised eccentric seat. In the open position, flow is straight through and flow capacity is high.
As the plug closes, it moves toward the seat without scraping the seat or body walls so there is no plug binding or wear. Flow is still straight through making the throttling characteristic of this valve ideal for manual throttling of gases and liquids.
In the closed position, the plug makes contact with the seat. The resilient plug seal is pressed firmly into the seat for dead-tight shutoff. Eccentric plug and seat design assure lasting shutoff because the plug continues to move into the seat until firm contact and seal is made.
Patented --
United States: 3,170,669 and 3,254,872;
Great Britian: 1,000,008;
Canada: 712,477 and 712, 478;
France: 1,308,784.
Rev. 1, July 1975
Rev. 2, January, 1977
Rev. 3, February, 1979
Rev. 4, August, 1980
Rev. 5, January, 1988
Rev. 6, April, 2001
Rev. 7, September, 2006
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