The SEWON 2” Service Valve is a single block Valve, which is use for retriever tool is removed to extract the probe or coupon, the service isolation valve maintains pipe integrity. The female threads on this valve are ACME 3”-5 2G threads and may be used with any SEWON high pressure access fitting as well as any other 2” access fitting on the market. 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 MR0175 compliant for use in sour service, factory pressure tested for a working pressure of 6000 psi (420bar). 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 with hammer union. The 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 pump. 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. Service valves are supplied with a durable lightweight field service case, extension bar, tool kit, and one O-ring seal kit.