Valves and valve actuation – Mechanical movement actuator – Plural motions of valve
Patent
1986-02-14
1987-08-18
Scott, Samuel
Valves and valve actuation
Mechanical movement actuator
Plural motions of valve
251264, F16K 3144
Patent
active
046871810
ABSTRACT:
A metering valve having a one-piece bonnet for reducing problems resulting from tolerance stack up. A guide portion is included on the nose of the bonnet for cooperation with a valve body bore to ensure concentric alignment between the metering pin and its associated orifice. A pair of O-rings on the valve stem cooperate with the bonnet bore to absorb forces and substantially reduce the potential for galling and breakage of the metering pin. One of the O-rings is compressed to a substantially greater extent than the other to aid in achieving better alignment between the stem and bonnet, and to obtain a firmer feel. A handle is included at the outer end of the valve stem and receives an upper portion of the valve bonnet. A packing is interposed between the handle and valve bonnet upper portion for limiting lateral movement between the handle and valve stem. The packing may be selectively adjusted without altering a preset deadstop position of the valve.
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Jagielo Joseph J.
Scheffel Gary W.
Simonelli James K.
Kamen Noah
Nupro Company
Scott Samuel
LandOfFree
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