1. Glycol Pumps Operating Pressure: 100 to 1500 psi Circulation Rate: 3 to 450 gph

2. A pump used for circulating glycol within a dehydration system. A pump used to circulate amine within a desulphurizer system. What is a Glycol Pump?

3. Features No auxiliary power required Eliminates need for level control and dump valve at absorber Low gas consumption Completely sealed system prevents glycol loss Only two moving assemblies Hydraulic “cushioned” check valves with removable seats of hardened stainless steel Circulation Rates: SC Series 8 - 200 gph PV Series 3 - 450 gph

4. Natural Gas Dehydrator Absorber (Contactor) Heat exchanger surge tank Reboiler Pump Wet glycol Dry glycol Wet glycol Dry glycol Wet Gas In Dry Gas Out

5. Inlet Scrubber Wet Gas Inlet Condensate Outlet Contactor Tower Glycol Cooler Dry Gas Outlet High Pressure Filter Reboiler Surge Tank Three Phase Gas, Glycol & Condensate Separator Excess Separated Gas Outlet Condensate Outlet Natural Gas Dehydrator

6. Piston ready to move to the right Wet Glycol from Absorber (High Pressure) Wet Glycol to Reboiler (Low Pressure) Dry Glycol from Reboiler (Low Pressure) Dry Glycol to Absorber (High Pressure)

7. Piston on its way to the right Wet Glycol from Absorber (High Pressure) Wet Glycol to Reboiler (Low Pressure) Dry Glycol from Reboiler (Low Pressure) Dry Glycol to Absorber (High Pressure)

8. Piston ring contacts actuator Wet Glycol from Absorber (High Pressure) Wet Glycol to Reboiler (Low Pressure) Dry Glycol from Reboiler (Low Pressure) Dry Glycol to Absorber (High Pressure)

9. Actuator moves ‘D’ slide to the right Wet Glycol from Absorber (High Pressure) Wet Glycol to Reboiler (Low Pressure) Dry Glycol from Reboiler (Low Pressure) Dry Glycol to Absorber (High Pressure)

10. ‘D’ slide shifts ports Wet Glycol from Absorber (High Pressure) Wet Glycol to Reboiler (Low Pressure) Dry Glycol from Reboiler (Low Pressure) Dry Glycol to Absorber (High Pressure)

11. High pressure shifts pilot piston Wet Glycol from Absorber (High Pressure) Wet Glycol to Reboiler (Low Pressure) Dry Glycol from Reboiler (Low Pressure) Dry Glycol to Absorber (High Pressure)

12. Reversal of flow shifts check valves Wet Glycol from Absorber (High Pressure) Wet Glycol to Reboiler (Low Pressure) Dry Glycol from Reboiler (Low Pressure) Dry Glycol to Absorber (High Pressure) Animation

13. Pump Trouble Shooting Loss of fluid circulation Runaway pump Hammering sound Pump skips Pump runs until normal temp. is reached Erratic pump speed Pump stalls Leaking check valves Valve body seal Dart seal Piston, piston rod seals Suction Lines too small Traps in wet glycol power piping send alternate slugs of glycol-then gas Plugged lines in dehy stystem Swollen O-rings Plugged passages in pump Blocked check valve Loose actuator

14. Pump Trouble Shooting Gas blow-by to wet discharge Excessive service required ‘D’ slide seal or port plates Pilot piston seal failure Poor Maintenance Poor filtration Chemical contamination

15. Pump Trouble Shooting Swelling Shrinking Brittle Square O-rings (compression set) Extrusion – nibbled or partially dissolved One side flat Liquid condensate problems V Sour gas AF Organic acids V High temperature V Swelling due to system fluids V Sour gas / Acid AF Abrasion Filters