4-stage cascade

[before]

I've repaired few small leaks; repaired the second stage TXV and now trying to get it working properly with a mixture of R23 and R1150.

Any idea on how much pressure is usually used by manufacturers in a TXV bulb?

[Peter_1]

I've repaired few small leaks; repaired the second stage TXV and now trying to get it working properly with a mixture of R23 and R1150.

Any idea on how much pressure is usually used by manufacturers in a TXV bulb?

In the bulb is mostly the same refrigerant as the circuit it controls. The pressure is that pressure at the corresponding temperature.