API 6D/API 608 High Pressure Casting/Forging Bw Floating/Trunnion Dbb Manual/Electrical/Pneumatic Cryogenic Top Entry Ball Valve

Over the years, we have been dedicated to the Pressure Balance Lubricates Plug Valve, PSB Cast Gate Valve, Forged Gate Valves business, and have won the trust and praise of users with advanced technology, excellent quality, and a win-win strategic cooperation policy. Our company always attaches importance to the cultivation of talents, and after years of hard work, we have formed a pragmatic and perfect corporate culture. Our company holds the enterprise idea of 'innovation, quality, service', and has won the trust of many users and the reputation in the industry. What we pursue is the five-in-one common development of society, customers, enterprises, shareholders and employees.

Product Details

NSV CAST TOP ENTRY BALL VALVE can be easily and quickly removed from the pipeline, and the maintenance is convenient and quick. When the valve fails in the line and needs repair, do not remove the valve from the line. Remove the center flange bolts and nuts, remove the bonnet and stem assembly from the body, and remove the ball and seat assembly. The ball and valve seat can be repaired online. This maintenance saves time and minimizes losses in production.

Applicable Standard
Design Standard: API 6D, ASME B16.34, BS 5351, API 608, MSS SP-72
Face to Face: ASME B16.10, API 6D, EN 558
End Flange: ASME B16.34, DIN 2501
Butt welding Ends: ASME B16.25
Inspection and Test: API 598, API 6D

Products Range
Size: 2" ~ 48"(DN50 ~ DN1200)
Rating: ANSI 150lb ~ 1500lb
Body Materials: Carbon steel, Stainless steel
Trim: A105+ENP, 13Cr, F304, F316
Operation: Lever, Gear, Electric, Pneumatic, Hydraulic actuators

Design Features
Full port or reduced port
Trunnion mounted ball
Blowout-proof stem
Double block & bleed
Emergency sealant injection
Cavity pressure self relief
Fire safe design to API 607 / API 6FA
Anti-static to BS 5351

STRUCTURAL FEATURES

1.Top entry
Its most difference from common ball valve is that its maintenance can be made on pipe line and without dismounting from the pipeline.The back space seat structure is adopted for the seat and the rear portion of seat retainer is oblique angle to prevent accumulation of impurity from affecting back space of seat.

2.Reliable sealing
The seat sealing is formed by seat sealing and metal retainer component.The seat retainer floats axially and low pressure sealing of valve seat is reached by pre-pressure of spring.In addition,the piston effect of valve seat is designed reasonably,which realized high pressure sealing by the pressure of operating medium and realize the interception of retainer to form the sealing of the body.The expansion graphite ring is designed to realize sealing under fire condition.

3.Double block&bleed(DBB)
When ball is full open or close position,the transmitter substance in center cavity of body can be released by drainage and emptying devices.In addition,the over loaded pressure in the center cavity of valve can be released to low pressure end by self relief seat.

4.Anti-static and fire safe design
The fire prevention design of valve meets the requirement in API6FA/API607 standard and the design of the anti-static conforms to regulations in API6D and BS5351.

5.Extension stem
For the underground installed valve,the stem can be lengthened and for the convenience of operation the corresponding compound injection nozzle and drainage valve can be extended to the top of valve.

FAQ

1. Q: What’s the valves warranty?
A: Our valves warranty period should be 18 months from the date of shipment or 12 months after installation, whichever occurs first.

2. Q:Does “NSV” valves have supply to any value end user?

A:Yes,it just like PETROKIMIA GRESIK in Indonesia, BP Iraq,ESFAHAN MOBARAKEH STEEL In Iran etc.

3. Q:Are you manufacturer or trading company?

A: We’re manufacturer,but our factory name is not named NSV due to we’re professional in promotion NSV brand with best service,and also have sold to many end user success.

The company will pay more attention to product quality and after-sales service, and strive to set a new example in the API 6D/API 608 High Pressure Casting/Forging Bw Floating/Trunnion Dbb Manual/Electrical/Pneumatic Cryogenic Top Entry Ball Valve industry! Our company has already had a lot of top factories and qualified technology teams in China, offering the best goods, techniques and services to worldwide customers. We have grown strong production capacity and excellent market expression.