CPC F16K 31/60 (2013.01) [F16K 5/0647 (2013.01); F16K 31/04 (2013.01); F16K 31/602 (2013.01); F16K 37/0008 (2013.01)] | 20 Claims |
1. A valve assembly comprising:
a valve body defining an interior cavity extending to a bonnet portion;
a valve stem including a valve element retained in the interior cavity of the valve body and an end portion extending beyond the bonnet portion, the valve stem being rotatable between a first limit position and a second limit position; and
a spring return handle arrangement including:
a user graspable valve handle;
a stem adapter having a first end portion secured to the valve stem and a second end portion secured to the valve handle; and
a return spring having a first end portion comprising a first end collar secured to the bonnet portion of the valve body, an intermediate spring loaded portion, and a second end portion secured to the stem adapter to apply a torsional load to the stem adapter for returning the valve stem to the first rotational limit position.
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