sealed to one another as with a seal 127 such as an o ring in a groove the flange 122 is secured to the conduit 40 as by welding or threaded engagement as is known in the art the flange 122 has a through passage 124 for receipt therethrough of a distal end 125 of a carrier 126 the automatic insertion device 116 includes the carrier 126 that is secured to the coupler 128 which in turn is secured to the body 11 the carrier 126 is in the form an elongate hollow rod receiving therethrough the actuator rod 81 the valve assembly 69 is attached to the carrier 126 by a connector 130 a portion of the carrier 126 and the connector 130 extend through a bore 131 through the flange 121 the automatic insertion device 116 further includes a linear motion drive cylinder designated generally 133 which may be moved to an extended position as seen in fig4 by pressurizing the cylinder 133 on the back side of a piston 135 through an inlet port 137 the inlet port 137 is connected in flow communication to the conduit 40 via conduit 139 with an infeed flow control valve 140 therein the conduit.