Those connections are for Pentair bulkhead fittings that were available for that valve if they are truly threads. As was mentioned, a hose clamp MAY help slow down the leak, but the only real cure is a new valve. Even if you can get the bulkhead fittings, the crack is behind the sealing area and will keep leaking. The crack will continue and there is no reliable way to repair one of these valves. If it fails suddenly with the pump running you will lose a large amount of water very quickly.