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| Warranty: | 1 Year |
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Full Opening Safety valve (FOSV) is a manual control ball type safety valve used to stop flow through the drill string. FOSV assembled between lower Kelly sub and upper drill pipe sub. In the drilling operation, in order to avoid malignant accidents, the FOSV shall be connected between drill pipes in drilling process.
It can be opened or closed off by simply turning a special operating wrench 90° according to indicated direction.If the Kelly is not made up in the drill string and flow occurs, crew members can insert the safety valve in the drill string.
This procedure is called Stabbing of full opening valve as a large in inside opening as possible. When fully open, flow from the drill pipe passes through the valve with no additional restriction. This relatively large opening allows the crew to stab the valve against pressure coming out of the drill string.
The ball-type design permits the valve to be compact, easy to handle, and have great strength. Standard test pressure is 10,000 psi, but higher pressure ratings are available.
FOSV and operating wrench be should be maintained on the rig floor at all times.
When ordering please specify:
| Type | Exradius OD Inch (mm) |
Inradius ID Inch (mm) |
Connecting thread API |
working pressure MPa |
| FOSV79 | 3-1/9 (79) | 4/5 (20) | 2-7/8HT PAC | 35-105 |
| FOSV89 | 3-1/2 (89) | 1-3/16 (30) | NC26 | |
| FOSV111 | 4-3/8 (111) | 1-37/64 (40) | NC31 | |
| FOSV121 | 4-3/4 (121) | 1-31/32 (50) | NC38 | |
| FOSV127 | 5 (127) | |||
| FOSV133 | 5-1/4 (133) | 2-11/25 (62) | NC40 | |
| FOSV159 | 6-1/4 (159) | 2-4/5 (71) | NC46 | |
| FOSV165 | 6-1/2 (165) | 2-13/16 (71.4) | NC50 | |
| FOSV168 | 6-5/8 (168) | |||
| FOSV190 | 7-1/2 (190) | 3 (76.2) | 5-1/2FH |
Example Datasheet:
Shandong Yacheng Petroleum Technology Co., Ltd.(YCPT) was established in 2016 while the mother company Dongying Xincheng Petroleum Technology was founded since 2003, and located at the second largest oilfield of China-Shengli Oilfield in Dongying city, which is famous as "oil city" in China. In domestic, we are first class supplier in vendor list of CNPC, and CNOOC, and member of CCOIC,CCPIT and so on.
The company is committed to develop, manufacture and supply of oilfield equipment, like oil and gas drilling rig equipment and spares, handling tools like hydraulic power tong, elevator,pneumatic spider, mud pump with spares, BOP equipment, Gate valve, manifold and swivel joint,etc.
We have established a complete quality control system, all products& equipment manufactured as per international standard ISO 9001 and API standard.
1.About packing:
plywood case,cartons or pallets
2.Terms of payment:
We accept T/T,L/C,Western union,Papal
3.Terms of shipment:
About 30 days after receiving the advance payment or according to bot parties agreement
4.Ports of shipment:
Tianjin,Qingdao,Shanghai and other locations requested by customers .by sea ,air or train
5.Guarantee:
One year since delivery.
6.Inspection:
100% testing before delivery
Welcome to choose our products,we are here all the time!
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