Patent ID: 9551425
Date: 2017-01-24
CPC Classifications: E21B,F16K

Claim:
1. A valve, comprising: a. first and second valve seat carriers; b. a first valve seat associated with the first valve seat carrier and a second valve seat associated with the second valve seat carrier; c. a valve ball between the valve seats; d. a stop mechanism operating between each of (i) the first valve seat carrier and the first valve seat and (ii) the second valve seat carrier and the second valve seat, the stop mechanism comprising a groove formed in the valve seat carriers and a tongue and lip formed on the valve seats, wherein the lip engages and is retained in the groove, whereby the stop mechanism limits the travel of the valve seats towards the valve ball such that the valve ball is allowed to move out of sealing engagement with the valve seats; and e. a biasing mechanism biasing each valve seat toward the valve ball.