Double Flapper Check Valve

Coiled Tubing Unit-Double Flapper Check Valve

Coiled Tubing Tools -The Dual/Double/Twin Flapper Check Valve is used in situations where the operator wishes to eliminate the flow or potential flow of fluids back through the work string while running or retrieving pipe under pressure.

The Dual Flapper Check Valve is designed so that the flow area through the valve is equal to or greater than the cross sectional area of I.D. of the valve seat. The Dual Flapper Check Valves are easy to assemble or disassemble, a new flapper cartridge can be inserted in a matter of minutes. The Dual Flapper Check Valve combines reliability, minimum flow restrictions, and the ability to pump wiper plugs or to drop balls through the valve for disconnects, etc.

As with ball type check valves, rust, scale, paraffin, dried hydrocarbons or materials do not pose a threat of plugging this flapper check valve due to the ability to pump through the valve at all times.

The flapper valve and seat are directly exposed to the pumped fluid and some errosion may occur on the seat surface and possibly the flapper valve itself, depending on a variety of factors including velocity through the valve, abrasiveness of the fluid pumped, solids content, and duration of the exposure. The flappers and valve seats should be checked and replaced when required.

Characteristics and features

▲Dual sealing in each flapper cartridge i.e. low pressure PTFE seat/seal and high pressure full metal to metal seat/seal
▲Full bore fluid passage for balls, darts & plugs
▲Removable flapper cartridges
▲Simple drop ball activation

Specifications and parameters

▲Different sizes can be customized according to customer requirements;
▲Different materials shall be selected according to the use environment of the tool, and the material selection shall comply with NACE-MR-0175 standard;
▲The connecting thread can be "AMMT", "PAC" or other API threads specified by the user.

Group Strength Advantages:

With registered capital RMB 84.76 million, covering 220,000 square meters, 76 workshops, 1058 Staffs, 950 sets of cold and heat machining equipment, 50 sets of numerically controlled equipment, ZYZJ O&G Group has consecutively established the strategic partnership with SINOPEC, CNPC, Zhongyuan Oil Field and Shengli Oil Field, and leveraged its technical and manufacturing advantages to provide satisfactory products and solution services to customers at home and abroad.

All products are manufactured under ISO9001, ISO14001,and comply with the requirements of API spec (acquired in 1999, including API 4F、5CT、7K、8C、11AX、11B、11E）

With professional teams experienced in the maintenance of drilling machinery,TDS,SCR equipment, we can undertake Pumping Unit oil well on-site management services.

Long-term supply accessories of Drilling Rigs, workover rigs, Mud Pump and beam pumping unit, and distribute drill pipe, drill collar, casing, tubing, special drill pipe sub etc.

We are major at Cementing and Fracturing Equipment, Gate Valve and wellhead Christmas Tree,Plunger Pumps and Mud Pumps, Flow line Products, Solid Control Equipment,Drilling Rigs and Work over Rigs Matching Equipment etc.

High quality & Steady quantity & Most competitive price will be sent for you.