Description : The Series 309 are available with over pressure cut-off (OPCO) or both under and over pressure cut-off protection (UPCO/OPCO).
Threaded Size : 1/2″
¾”
1″,
1-¼”
1-½”
2″
Pressure : Up to 275 PSIG
Flanged Sizes : 1″ and 2″
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