25AUB-Z3 / N35B Both units - are bronze, have removable strainer, seat, and have the bypass feature. The design difference allows the 25AUB-Z3 to have a higher flow rate than the N35B. Properly sized, either unit should work fine for your residence. Even though these units have a bypass you should still have an expansion tank on your hot water distribution system.

I think I understand, thanks! One last question. Do you think it's worth for me to be able to clean out the strainer? I'm on city water.

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Can someone tell me the advantages between the 25AUB-Z3 and the N35B Watts pressure reducing valves? Which one should I get? The 25AUB-Z3 valve seems to be about 15 bucks more expensive. [www.wattsregulator.com]

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I get it, the size range for the 25AUB-Z3 is 1/2" to 2" and for the N35B it's 1/2" to 1". Thanks! Your answer makes alot of sense.

These are the same type of device; different bells and whistles. The N35B has an bypass feature and 'cartridge' type seat assembly for easy repair. The other model has a strainer which can be easily accessed for periodic cleaning. Both are widely seen in residential use, as are the Wilkins model 70 and model 600.

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Sorry, I guess I'm really confused. The discription for the N35B & 25AUB both say they are "Water Pressure Reducing Valves" and "consists of a bronze body construction". What is the difference between a water pressure regulator and a water pressure reducing valve??? I want to reduce the pressure comining into my house which is now at 100PSI.

The 25AUB, is a bronze body water pressure regulator The N35B is a water pressure reducing valve both are set at the factory for 50 lbs. You really have to know your needs before making a choice. Best Wishes

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