Description: This Royal AquaMaster is the highly desirable late series (ser# 7xxxxx) heavy yoke model. Has been tested at pressure and operates as it should. Introduced in 1964 as the Royal Master, this two stage double hose regulator became the climax of the US Divers regulators. Based upon the Aqua-Master concept, this regulator utilized a balanced first stage, boasting as being "the regulator for those who demand the very best". The Royal Aqua-Master was to become the last of the US Divers double hose models with production ceasing in 1973. It has remained the apex of double hose regulators and is regarded by vintage divers today as the model of choice. What makes the Royal Aqua-Master so desirable is its balanced first stage. This change from the Aqua-Master produced its success. The first stage of the DA Aqua-Master has a diaphragm upstream valve which opens against the high pressure air. As cylinder pressure drops the first stage pressure increases, delivering greater pressure to the second stage because there is less force to close the first stage valve. Breathingbecomes easier as cylinder pressure lowers. Therefore in the unbalanced first stage, the intermediate pressure output changes in inverse proportion to the diminishing cylinder pressure.
Price: 475 USD
Location: Tallahassee, Florida
End Time: 2024-09-26T15:06:36.000Z
Shipping Cost: 5 USD
Product Images
Item Specifics
All returns accepted: ReturnsNotAccepted
Brand: Aqua Lung
Model: Royal AquaMaster
MPN: Not Specified
Country/Region of Manufacture: United States
