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China Sub-surface control downhole super safety valve 8 manufacturer


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Product Detail

Model No.: Super safety valve -SSV
Production Capacity: 1set/month
Delivery Date: 90days
Working temperature: 400F
Material: Inconel 718
Size: 8"
Service: Full H2S
Working condition: High pressure high temperat...
Means of Transport: Ocean,Land,Air
Packing: plywood
Working pressure: 105Mpa
H2s: NACE MR0175
Type: Surface control
Condition: New
Application: Drill stem testing operatio...

A master valve for downhole testing with OD8", ID3", 15000PSI working pressure, Material in Inconel, capable of cutting wireline,coiled tubing

Well testing  DST Super Safety Valve

Sub-surface control downhole super safety valve 8"

The Safety valve normally run inside or below a BOP and is used to control well flow.

The valve is controlled by two hydraulic lines and contains a chemical injection port. Designed to close by spring force but has a nirogen charge chamber to quicken the closing time which gives the valve the ability to cut wireline and coiled tubing without the additon of balance line pressure. The valve is held open by maintaining hydraulic control on the control ine. The nitrogen charge chamber and the balance line chamber are the same chamber.The nitrogen pressure acts directly on the operating piston and a floating check valve keeps the nitrogen from escaping from the chamber into the balance line.The check valve floats on the surface of the hydrulic fluid as fluid is pumped into the chamber. when the fluid is removed, the floating check valve sets down on the seat and seals the nitrogen charge in the chamber.


Design Specifications


8.00 in. (203.20 mm)


3.00 in. (76.20 mm)

Makeup Length

135.36 in. (34320.25px)


(Top) 5-3/4 in. 4-stub Acme Box by

(Bottom) 5-in. 4-stub Acme Box

Rated Working Pressure

15,000 psi

Service Temperature

0 to 350ºF (-18 to 177ºC)

Service Environment

All Temperature Sour Service


Coiled Tubing cut off in Testing

Control Panel System


The Material for SSV can be Inconel for high pressure, high temperature and strict downhole condition, H2S,HCL,CO2.

The AISI4140 material also can be available for normal testing service.

Well testing  DST Super Safety Valve

Sub-surface control downhole super safety valve 8"

skype Mr. Dongwa

Tel: 86-29-81779342
Fax: 86-29-81543379
Mobile: 136 5925 3658
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Company Info

XI'AN ZZ TOP OIL TOOLS CO.,LTD [China (Mainland)]

Business Type:Manufacturer, Distributor/Wholesaler, Service
City: Xi'an
Province/State: Shaanxi
Country/Region: China (Mainland)

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