Calculation and selection of pressure values upstream and downstream of Y-type filters

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I’m seeking advice from everyone regarding the issue of installing pressure gauges upstream and downstream of a Y-type filter. I don’t know what the readings are on these two pressure gauges The Y-type filter is 1”-150#-CS-40 mesh (304 metal woven mesh). It is used at the outlet of the atmospheric pressure hydrocarbon condensate tank to provide initial filtration of the condensate. A centrifugal pump with a capacity of 4 M3/h and a head of 15 m is connected to the rear end of the Y-type filter, used to transport the condensate to tank cars. 1. Please provide the pressure drop of the Y-type filter when it is operating properly (including the pressure drop when the filter element is clean and when it needs to be cleaned). 2. Please provide the failure pressure drop of the Y-filter. The pressure value before the Y-type filter: I calculated it using density x g x h, and it’s around 6 KPA. Is this correct? When searching for Y-type filters on Baidu, it is stated that the pressure loss associated with water filtration is generally between 0.52 and 1.2 kPa. For the pressure value after using a Y-type filter, I plan to assume a resistance of 3 KPa. Is this an appropriate approach? Should the range of this pressure gauge take into account positive and negative pressures? Because the centrifugal pump manufacturer said it can tolerate a slight negative pressure. But worried about the high cost of positive and negative pressure gauges, I still prefer to choose gauges with a range of 0~16 KPA. Please help come up with some ideas.