Fair enough but it just seems odd that these manufactures who manufacture industry standard equipment(robin air) would advertise venturi pumps and tech books would mention them. However if I put it on a guage and it draws enough vacuum then it will boil the water. Even if it is not an industry standard tool.

__________________
My Daily : 96 E-300 Diesel with 195,000 miles
Retired: 92 300D 2.5 T 345K miles and for sale
Retired: 95 E320 157K miles and currently parked with blown engine

Both retired cars are for sale as is my w124 shop inventory