This regulator from Valterra operates the same as the Watts without buying hose fittings.
Valterra model A01-1117VP
Lead-Free Brass Regulators and Fittings conforms to CA and VT laws for drinking water fixtures.
Maximizes water flow protecting RV Plumbing
Factory Pre-set to 45 psi
Adjusts for maximum water flow
Easy to read gauge
Includes inlet screen washer
A01-1117VP part no. description price
A01-1117VP Adjustable Water Regulator, Lead-free brass 74.63
The small in line regulators are more of the restrictor type There is two models. One has a small hole about .25 inches and the other has one that is about 3/8 inch in diameter