CLIENT STORY
Molygraph VLG 620 successfully passed pressure testing conditions on 3 different OEM valves.
1 min read | 05 June 2023
Overview
A valve maintenance company based in Malaysia required a valve sealant. The Malaysian distributor for Molygraph suggested VLG 620 to replace the current product being used. The customer required certain testing to be done to evaluate the quality and sealing properties of the lubricant.
Challenge
- Should pass the pressure testing conditions on 3 different OEM valves. (FMC, Cameron and McEvoy)
- Excellent ability to seal the valve.
Solution
MOLYGRAPH VLG 620
Synthetic Valve sealant with a special thickener and polymer base oil combination
- Superb resistance to hydrocarbons, Co2 and H2S.
- Excellent sealing ability.
- Wide Temperature capability -40 to +230ºC.
Testing Plan
- All valves are cleaned inside out to remove the grease sealant left over.
- Water is injected inside the gate valve assembly (Simulation of actual scenario at off-shore facility) at a specific rate.
- Injection of VLG 620 sealant and then re-running the pressure test.
- Recording of data using digital pressure gauge.
Benefits of VLG 620
| TECHNICAL SPECIFICATIONS | TEST METHOD | VLG 620 | COMPETITOR PRODUCT |
| Thickener | *CTM | Inorganic | Inorganic |
| Base Oil | *CTM | Synthetic Polymer | Synthetic Polymer |
| Four Ball Wear Scar | ASTM D 2266 | 0.408 mm | 0.542 mm |
| Four Ball Weld Load | ASTM D 2596 | 620 kg | 400 kg |
| Resistance to Diesel | *CTM | Pass | Pass |
| Resistance to Hexane | *CTM | Pass | Pass |
| Temperature Range | - | -40 to +230ºC | -29 to +230ºC |
VLG 620 Performance
| PROPERTY | DESCRIPTION | BEFORE SEALANT | AFTER SEALANT |
| McEvoy 2-1/16 | Seal | Valve is passing from 0 psi to test pressure of 4400 psi in 7 mins. | Pressure maintained to 4400 psi for 15 mins. |
| FMC 3-1/8 | Seal | Valve is passing from 0 psi to test pressure of 3700 psi in 5 mins. | Pressure maintained to 3700 psi for 15 mins. |
| Cameron FL 2-1/16 | Seal | Valve is passing from 0 psi to test pressure of 3400 psi in 10 mins. | Pressure maintained to 3400 psi for 15 mins. |
Results
- VLG 620 successfully sealed 3 different OEM valves.
- It was able to seal the valves successfully within the time frame during the trial period.
Tests at a higher pressure than the incumbent product.
Related Product
Details
Industry
Application
Wellhead and Xmas tree valves
Client
Valve Maintenance Company
Location
Malaysia
Share
Details
Industry
Application
Wellhead and Xmas tree valves
Client
Valve Maintenance Company
Location
Malaysia
Overview
A valve maintenance company based in Malaysia required a valve sealant. The Malaysian distributor for Molygraph suggested VLG 620 to replace the current product being used. The customer required certain testing to be done to evaluate the quality and sealing properties of the lubricant.
Challenge
- Should pass the pressure testing conditions on 3 different OEM valves. (FMC, Cameron and McEvoy)
- Excellent ability to seal the valve.
Solution
MOLYGRAPH VLG 620
Synthetic Valve sealant with a special thickener and polymer base oil combination
- Superb resistance to hydrocarbons, Co2 and H2S.
- Excellent sealing ability.
- Wide Temperature capability -40 to +230ºC.
Testing Plan
- All valves are cleaned inside out to remove the grease sealant left over.
- Water is injected inside the gate valve assembly (Simulation of actual scenario at off-shore facility) at a specific rate.
- Injection of VLG 620 sealant and then re-running the pressure test.
- Recording of data using digital pressure gauge.
Benefits of VLG 620
| TECHNICAL SPECIFICATIONS | TEST METHOD | VLG 620 | COMPETITOR PRODUCT |
| Thickener | *CTM | Inorganic | Inorganic |
| Base Oil | *CTM | Synthetic Polymer | Synthetic Polymer |
| Four Ball Wear Scar | ASTM D 2266 | 0.408 mm | 0.542 mm |
| Four Ball Weld Load | ASTM D 2596 | 620 kg | 400 kg |
| Resistance to Diesel | *CTM | Pass | Pass |
| Resistance to Hexane | *CTM | Pass | Pass |
| Temperature Range | - | -40 to +230ºC | -29 to +230ºC |
VLG 620 Performance
| PROPERTY | DESCRIPTION | BEFORE SEALANT | AFTER SEALANT |
| McEvoy 2-1/16 | Seal | Valve is passing from 0 psi to test pressure of 4400 psi in 7 mins. | Pressure maintained to 4400 psi for 15 mins. |
| FMC 3-1/8 | Seal | Valve is passing from 0 psi to test pressure of 3700 psi in 5 mins. | Pressure maintained to 3700 psi for 15 mins. |
| Cameron FL 2-1/16 | Seal | Valve is passing from 0 psi to test pressure of 3400 psi in 10 mins. | Pressure maintained to 3400 psi for 15 mins. |
Results
- VLG 620 successfully sealed 3 different OEM valves.
- It was able to seal the valves successfully within the time frame during the trial period.
Tests at a higher pressure than the incumbent product.
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