Never Mix, Never Worry:
Eliminating Cross-Fluid Contamination
Using Dynex single-fluid pumps eliminates concern about the water glycol becoming contaminated by the oil from a separate lubrication circuit. With no lubricating oil, you'll never worry about cross-fluid contamination.
7 Reasons to Use Single-Fluid Pumps:
1 Environmental Safety
Dynex checkball pumps use the water glycol for internal bearing lubrication. This single-fluid design reduces environmental concerns by removing the need for a secondary pump oil on the platform.
The single-fluid design avoids the need and cost for regular maintenance of a separate lubricating circuit. This makes these pumps ideal for unmanned, remote platforms.
3 No Fluid Degradation
With no separate lubrication circuit required, glycol and oil cannot combine to form a potentially damaging mixture. This prevents fluid degradation, providing longer component life. See "Mayonnaise Effect" at right.
4 Low-Cost Installation
Eliminating a separate lubrication circuit reduces space and piping costs. These single-fluid pumps are easier to handle and install than other designs.
5 Long-Life Operation
The checkball pump design isolates the pistons from system pressure during startup. This requires lower starting torque providing longer bearing life.
6 Smaller and Lighter
The checkball pump design provides a high horsepower-to-weight ratio. These pumps can be less than half the size, weight and cost of a triplex or plunger pump.
7 Vertical Mounting
Checkball pumps can be installed in a water glycol reservoir – not easily done with other pumps with a separate lubrication circuit. Internal lubricity passages in Dynex pumps ensure adequate bearing lubrication, for long service life in vertical mounted applications.
High pressure capability and compatibility with water glycol make these pumps ideal for wellhead safety controls systems and other offshore oil & gas applications. See specifications on Dynex water glycol pumps.