Cast Steel Top Entry Half Ball Valve Side Class150/300

Wining the majority of the crucial certifications of its market for Forged Swing Check Valve, Bellows Forged Globe Valve, Y Strainers. Our company has mastered a number of world-class core technology and product technology, and has a high reputation and established a good reputation in the industry. Every employee should have a strong sense of collective honor. Only in this way can we put the interests of the collective first, be happy with the prosperity of the collective and sad with the decline of the collective. Only in this way can the collective have cohesion.

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.

With this motto in mind, we've got develop into amongst one of the most technologically innovative, cost-efficient, and price-competitive manufacturers for Cast Steel Top Entry Half Ball Valve Side Class150/300. From the past few years, our firm absorbed and digested sophisticated technologies equally at home and abroad. Our qualify products have good reputation from the world as its most competive price and our most advantage of after-sale service to the clients.