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| Three ball-type service valves are available for use with
Metal Samples Corrosion Monitoring Systems retrieval tools:
standard, low and high temperature. The female threads on this valve are industry-standard
ACME threads and may be used with any Metal Samples Corrosion Monitoring Systems high
pressure access fitting as well as any other 2" access fitting. The valves have a
bleed valve located on the non-process side of the ball. This bleed valve may be used to
drain the retrieval tool, sample process, or be used as a path for back-pressuring. All
valves are NACE MR-0175 compliant for use in sour service, factory pressure tested for a
working pressure of 3600 psi* W.O.G., and meet API6FA and API607 fire safe requirements.
The service valve is a portable valve that is used in conjunction with a retrieval tool. The service valve is threaded onto an access fitting in preparation for retrieving a plug. Next, the retrieval tool is attached to the service valve. System pressure is then equalized in the retrieval tool by unseating the plug. Occasionally deposit buildup in access fitting bodies does not allow for pressure equalization through the plug. If this occurs, the retrieval tool can be back pressured by use of a back-pressure kit (P/N - HA104000). Once pressure equalization has occurred, the plug is removed and the valve is shut. Finally, the retrieval tool is removed from the valve allowing access to the plug and its accessory. A Blanking Cap/Plug Assembly (P/N - PS5612) may be installed on the valve as an additional safety measure, if required. Service valves are supplied with a durable lightweight field service case, extension bar, tool kit, and one O-ring seal kit. Additional accessory items are listed below.
Specifications
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* A 6000 psi model is also available. Contact our sales department for details. |
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Figure 2. Service Valve Parts
| Item | Low Temp Part No. |
Standard Part No. |
High Temp Part No. |
Description | Low Temp Material |
Standard Material |
High Temp Material |
Qty |
| 1* | HA700604370 | HA700604834 | HA700604834 | Viton O-Ring | Buna-N | Viton 70 | Viton 70 | 1 |
| 2* | -- | -- | -- | Viton O-Ring | Buna-N | Viton | Viton | 1 |
| 3* | PR6303834 | PR6303834 | Viton O-Ring | Buna-N | Viton 70 | Viton 70 | 1 | |
| 4* | -- | -- | PR6720A50 | Seat Seal | Celcon | Celcon | PEEK | 2 |
| 5* | -- | -- | -- | Viton O-Ring | Buna-N | Viton | Viton | 1 |
| 6* | -- | -- | -- | "L" Seal | Buna-N | Viton | Viton | 2 |
| 7** | -- | -- | -- | Carrier | 4130 | 4130 | 4130 | 2 |
| 8* | -- | -- | -- | Stem Seal | Polymyte/ Buna-N |
Polymyte/ Viton |
Polymyte/ Viton |
1 |
| 9* | -- | -- | -- | Ring, Back-Up | Teflon | Teflon | Teflon | 1 |
| 10 | -- | PR6359158 | -- | 316 6000 PSI | 316 | 316 | 316 | 1 |
| 11** | -- | -- | -- | Bleed Valve Ball | 17-4 PH SS | 17-4 PH SS | 17-4 PH SS | 1 |
Table 1. Service Valve Descriptions
* Parts included in Seal Kit / Repair Kit.
** Parts included in Repair Kit.
1. Seal Kit - P/N KR1009834 (Standard Temp)
2. Repair Kit - P/N KR1010 (Standard Temp)
Contact Metal Samples Corrosion Monitoring Systems sales department for pricing and availability.
Main Office:
Phone: (256) 358-4202
Fax: (256) 358-4515
E-mail: msc@alspi.com
Houston Office:
Phone: (281) 471-2777
Fax: (281) 471-3405
