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Tubing String Tester Valve Flapper TST Valve For Drill Stem Test Equipment

Minimum Order Quantity : 1 set Price : USD 1-10000/set
Packaging Details : Pollywood Delivery Time : 30-50 days
Payment Terms : L/C, T/T, D/P Supply Ability : 10 set/month
Place of Origin: China Brand Name: ZZ TOP OIL TOOLS
Certification: ISO, API Model Number: Tubing String Tester Valve

Detail Information

Product: Tubing String Tester Valve Type: Flapper TST Valve
Size: 5 Inch & 3 7/8inch Working Pressure: 15000psi
Application: Cased Hole Drill Stem Testing Service Connection: IF, EUE , CAS
Working Condition: Oil & Gas & H2S Service Working Temperature: Up To 425oF
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Product Description


Tubing String Tester Valve / Flapper TST Valve For DST service


The Tubing String Testing Valve is a full-opening valve in flapper type. The tubing string tester valve works as downhole tester valve for taking the pressure-test in drill stem test string while running in the hole.

The tubing string tester valve is operated after it is stung into a permanent packer or after a retrievable packer is set. The TST Valve requires a differential pressure between the annulus and the tubing to shear. The valve can also be used for pipe flexing if it is run below an annulus pressure-responsive circulating valve.


The Tubing String Tester  Valve consists of three main parts:

• Flapper valve and spring
• Shear pin section
• Locking dogs

Technical parameter of Tubing String Tester Valve


Size 127.5mm(5”)
ID 57mm
Length 1333mm
Working Pressure 105Mpa
Tensile Strength 2430KN
Internal Pressure Strength 150Mpa
External Pressure Strength 139Mpa
Flapper Differential Pressure 70Mpa
Max. Shear pin qty 12pcs
Shear pin Value 3.5 Mpa ± 0.2 Mpa/pc
Service NACE MR0175,Above 175F
Working Temperature -29oC~204oC
Connection Thread 3 1/2” IF BXP 3 7/8” CAS BXP


Tubing String Tester Valve Flapper TST Valve For Drill Stem Test Equipment 0 Tubing String Tester Valve Flapper TST Valve For Drill Stem Test Equipment 1


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