Place of Origin: Shaanxi,China (Mainland)
Certification: API, ISO
Type: APR drill stem testing tools
Pressure: high pressure
Service: H2S + CO2
Application: oil well testing
Condition: New
Standard: NACE MR0175
Maximum Pressure Rating: 15000psi


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Product Description

Payment & Shipping Terms Supply Capacity
Unit Price:10.0 USDProduction Capacity:500set/month
Trade Term:FOB,CFR,CIF,DDP,DAP,CIP,CPT,FCA,EXWPacking:seaworthy packing
Payment Terms:L/C, T/TDelivery Date:30days after the down...
Min. Order:1 Piece/Pieces
Means of Transport:Ocean, Air, Land


Product Introduction

The Hydraulic Valve is a down hole valve used in opening and closing the flow from the test zone. The tool gives positive surface indications of opening: a sudden small movement of the drill pipe, combined with a slight reduction in drill pipe weight.

The Hydraulic Valve enters the hole in the closed position. After the packers are set, setting weight on it opens the tool. This causes the Piston to move in the Inner Sleeve and aligns flow ports that enable flow from the test zone to flow into the drill pipe.

The hydraulic section forces hydraulic fluid to flow through small passages and delays the opening of the valve. This prevents the tool from opening unintentionally if a bridge is hit while running into the hole. Lifting up on the drill string closes the tool. Check valves in the hydraulic section bypass the dampening action when closing the valve.







Fishing I.D.



Effective ID (without sample)



Effective ID (with sampler)




1.62 m (5.31')

1.14 m (3.74')

Min. Compression

4,000 lbs

4,000 lbs


7-10 minutes

7-10 minutes

Max. Compression

30,000 lbs

30,000 lbs


1-2 minutes

1-2 minutes

Pressure Rating

5,000 psi

5,000 psi

Temperature Rating

-40°F  to 250°F

-40°F  to 250°F

Tensile Strength

300,000 lbs

120,000 lbs


3 ½ IF

2 3/8 IF


H2S + CO2

H2S + CO2


About Us

Xi'an Kingwell Oilfield Machinery Co.,Ltd is a professional supplier for oilfield products according to the API standard.

Our products have exported to USA, Canada, Egypt, India and UEA, etc with 40 FCL containers per month. Now, with high quality and short supply and good service, our products have got good reputation home and abroad .

Here we got some prise as follows.


Kingwell is a CNPC & SINOPEC & BV certified company, having all the Quality Systems in place for design, planning, manufacturing and quality monitoring & traceability to ensure our products match the highest quality standards.

We test our products strictly according to the NACE MR 0175-2002 Standard and our quality assurance period is 12 months.

Certificates endorsed by DNV/BV/ABS and Documents we can supply with the shipments:

1. Pressure Test Certificate with Graph and time recorded.

2. Function Test   

3. Rubber Products NACE Compliance   

4. Material Mill Certificate and treatment characteristics

5. H2S Compliance   

6. Service Manual

7. Parts Manual

8. Testing Procedures.

9. Open up type tool drawing for dressing purpose– if any.

Design & Development

Kingwell has an ongoing relationship with Xi'an Petroleum University and built up long term cooperation with China Aerospace Group for more than 10 years. Design Department is familiar with CAD and Pro-E facilities and has on rolls qualified & experienced engineers. Now, they are engaged in development of new products as required in the market place. Kingwell' products are validated in-house in a Test Well, a Sub-surface Type Test Facility with simulated well conditions up to 15000 psi Differential pressure , 400°F and Max 450°F.

Inspection and Test Facilities

We own the world-class facilities with professional laboratory technicians. The main facilities are Surface Testing (Hydraulic Testing Unit), high temperature heat treatment furnaces, API Gages (Master & Working), Profile Projector, tensile testing machine, pressure sensor and data acquisition system, Universal Testing Machine, Hardness Tester, Nitrogen Pump, Function Test Pump, Ultrasonic Thickness Tester etc. All the goods must be tested by several processes and must be qualified when packed.

Product delivery

Payment:TT/LC:30% advance payment.70%before shipment

Warranty: Warranty period is 1 year after installation.

Origin: China

Minimum order: 1 set

Packaging: wood case or steel carton

Delivery Date: within 1-2 month(s) after receiving prepayment

Logo: KW, we can produce according to customer requirements.

Technical Documents: We can provide technical documents according to your requirements.

Additional service: Customers are served to test our products in our factory upon request.

The followings are some pictures about product packaging
DST tools 5 1/2RTTS Circulating Valve


Kindly let me know if you have any interest or enquiry about our products. You are also always welcomed to come to our factory for a visit at your convenient time.

We will offer you a good price and show you our best service.

Category: Circulating Valve

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