Drain valve 3 7/8" DST slim hole

Model: 3 7/8" Drain Valve
Place of Origin: Shaanxi,China (Mainland)
Application: oil well testing
Type: APR drill stem testing tools
working pressure: 105 Mpa
service: H2S
standard: NACE MR0175
Working condition: High pressure high temperature(HPHT)
Size: 3 7/8"
Brand: ZZTOP
Material: AISI 4140
Special Groups: Case hole DST
DST Sleeve type drain valve
drill stem testing
Sleeve type drain valve


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Product Description

Payment & Shipping Terms Supply Capacity
Unit Price:1000.0 USDProduction Capacity:5 pcs/month
Trade Term:FOB,CFRPacking:polywood case
Payment Terms:L/C, D/A, T/TDelivery Date:7 days
Min. Order:1 Piece/Pieces
Means of Transport:Ocean, Air, Land

3 7/8" Sleeve type drain valve

3 7/8" Drill stem testing tools for slim hole


Sleeve type drain valve is used for lofting after completing pipe string test, before running, the loft hole in sleeve drain is 

sealed by two sets of O-ring, sleeve drain and nut drain are stumbled by two screws. During running operation, sleeve 

drain will not be loose, after the test, connecting u the loft clamp, turn the nut drain and make sleeve drain move upward,

when connecting the bore mandrel to the loft hole of sleeve drain, lofting can be achieved.


3 7/8" DST Sleeve type drain valve




Drift diameter:



1159 mm

Working pressure: 

15000 psi(105Mpa)

Working temperature:

 -29oC ~ +177 oC

Tension strength: 

   140 Mpa

Outer pressure resistance

  130 Mpa

Torque strength: 




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Drain valve function test chart
5x 15K psi Sleeve Type Drain Valve drill stem testing




ZZ TOP OIL TOOLS is the professional manufacturer for the drill stem testing tools and surface testing equipment. All the DST tools are conformed with NACE MR 0175 with traceability,and the DST tools can be worked in H2S & CO2 above 175 F and full H2S, also with the skilled and experienced engineers, we can design the drill stem testing tools as per customer's well condition. Moreover, we supply the training in our factory and operation instruction at the well site. The DST tools are exported to USA, Colombia, India, Pakistan, Iran, Brazil etc. and enjoy the good reputation from the customers.

Category: Full Bore Drain Valve DST

Related Category: Multicycle Circulating Valve/DST OMNI valve  Tubing string testing valve DST  Round mandrel slip joint DST  Shock Absorber DST  Full bore safety joint DST 

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