Locking valve

A lockable valve for selectively prohibiting flow of fluid fuel from a fuel supply to a engine comprising:

• a) a molded plastic housing means, including multiple housing components mutually aligned by male and female coupling means and held together by rivet means;
• b) flow line receptacles, as integral parts of said housing means and equipped with anchoring shoulders, for receiving and anchoring flow line tubular members for conducting said fluid fuel from said fuel supply and to said engine, respectively;
• c) a valve stem and a seat for selectively closing said valve for prohibiting flow of said fluid fuel to said engine;
• d) a diaphragm seal, anchored by an annular clamping means formed by two opposed annular lips to fluidtight seal said housing means, for selectively fluid-tight sealing said valve stem to said seat to selectively close said valve;
• and
• e) locking means, held within said housing means by a snap ring and oriented by an arcuate flange cooperating with a keyed passage, equipped with plunger means carrying said valve stem, whereby said valve may be closed by depression of said plunger means from a first position to a second position, and opened only by unlocking said locking means to release said plunger means to return to said first position.