Gear Operated Fully Welded Strainer Ball Valve

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Product Details

NSV Electric Actuator Trunnion ball valves can supply with quick open&close for special project,and the electric actuator can supply China brand and also can install with famous brand like ROTORK etc.that have On-Off type and Intelligent types.

Applicable Standards:
Ball Valve design according to API6D,BS5351,ASME B16.34
Face to face ASME B16.10,AP6D
End Flanges ASME B16.5/ASME B16.47
Butt welded ends ASME B16.25
Fire Safety API607,API6A
Inspection and test API 598,API6D

Products Range
Size: 2" ~ 48"(DN50 ~ DN1200)
Rating: ANSI 150lb ~ 2500lb
Body Materials: Carbon steel, Stainless steel
Trim: A105+ENP, 13Cr, F304, F316
Operation: Electric actuators

Design Description:
- Two Pieces or Three Pieces Body
- Soft Seated
- Full or Reduced Bore
- Anti Blow Out Stem
- Anti Static Device
- Fire Safe Design

STRUCTURAL FEATURES

1.Firesafe Design

NSV trunnion mounted ball valve’s fire safe is conforms to requirements in API 607,API spec 6FA,when non-metal resilient seats are destroyed in the fire,the upsteam medium pressure push the ball into the downstream metal seat lip to cut off the line fluid and prevent the internal leakage due to secondary metal to metal seals.

2. A The Bi-sealing design structure, i.e. seat sealing in front of the ball and seat sealing behind the ball

According to some special working conditions and customers requirement, We has provided the trunnion ball valve with the Bi-sealing design structure, i.e. seat sealing in front of the ball and seat sealing behind the ball, thus the reliable sealing of the valve is ensured because the valve can perform normally even if one of the effective sealing designs becomes lost due to the abnormal condition.

Regarding the seat in front of the ball, the piston effect formed by the area difference between D1 and D2 ,plus the pre-tightened force of a spring would cause the seat in front of the ball by the pressure difference of the medium before and after the valve to touch the ball closely to form the tightness, of which the sealing force will become bigger as the pressure difference gets higher.
Regarding the seat after the ball, the piston effect formed by the area difference between D2 and D3 ,plus the pretig-htened force of a spring would cause the seat behind the ball to touch the ball closely to form the tightness, of which the sealing force will become bigger as the pressure difference gets higher.

FAQ

1. Q: What’s the brand of your company can supply ?

A:NSV or OEM service

2. Q:Do you have customized valve?

A:Yes,we can supply customized valves.

3. 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.

Our Gear Operated Fully Welded Strainer Ball Valve was widely praised soon after it was launched, and quickly occupied the market for its super quality. We attach importance to the progress and development of technology, and continue to strengthen the scientific and technological team to meet the various requirements of customers, and our products have reached the international level. Our company has a good development thanks to the support and cooperation of friends from all walks of life. With years of accumulated technical experience and customer suggestions, we continue to refine our products to create greater profit margins for customers. Welcome to inquiry!