Q: I have been using the sunvic sd2701 until lately, but they have a high failure rate. You say the hsa3 fits the existing valve body?
But the thread on the hsa3 is totally different, is there screw that allows me to use this actuator?
Regards, Fred FYFE
A: You will need to use the screw that comes with the valve body.
If you don't have this screw, you can use cable ties.
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