Double Block and Bleed Ball Valve

Our F310 Globe Valve, Cast Steel Swing Check Valve, Forged Swing Check Valve is very advantageous since we have introduced a large number of advanced production equipment, with imported high-quality raw materials, and the modern management model in line with international standards. We welcome any potential cooperation opportunities and discuss with you how to achieve win-win development and share success on the basis of mutual benefit! Now and in the future, our company will provide better products and services for global customers with global cause and innovation spirit. Our sincere sense of social responsibility have gained widespread attention and praise from all walks of life. Our company takes the demand as the guidance, the science and technology development as the driving force and relies on the fine technology and the good faith idea.

Product Details

NSV Double Block and Bleed Ball Valves(DBB BALL VALVES) are mainly suitable for the instrumentation but also required as an alternative to the in-line installation of two valves.

DBB VALVES assure double isolation function thanks to two obturator inserted in a single body and they provide the bleed function by means of a bleed/vent system located between obturators(body port and ball,gate or needle valve),from the floating ball valve design,that with several different constructions.

Double block & bleed valves DBB are recommended for any pressure class and ensure long-lasting seal.

They can be supplied both in the Trunnion and in the Floating version.

These valves can be designed to meet with Customer’s requirements: for instance, they may be buried in the ground and made operable by the extensions.

Material: A105,F304,F316,ETC.
Size Range: 1/2"~2",large sizes on request
Pressure Rating: ASME CL, 150 to 2500lb.

Design Description:
- Integral,Two or Three Pieces Body
- Metal or Soft Seated
- Full or Reduced Bore
- Flanged or NPT Ends
- Anti Blow Out Stem
- Anti Static Device
- Fire Safe Design

Main applications in the petrochemical field:

· Cryogenic service.

· Low temperature.

· Ambient temperature.

· High temperature.

· Corrosive fluids.

· High pressures.

· Samplings from line.

· Fluids injection.

In conditions of space constraint its more and more important to find compact soluction.As you can see here above one valve is performing the same function of three valves all together and allows a full safety on the line during maintenance operations, not to consider the important reductions of the leakage points on the line.DBB/SBB valves can be used for CHEMICAL,INJECTION AND SAMPLING(through a quill),PRESSURE CONNECTIONS(instrumentation mainly),PROCESS ISOLATION(located in primary process stream).

DBB ball valves produced by NSV are provided in accordance with the following certifications:

· ISO (International Organization for standardization)

· PED (Pressure Equipment Directive)

FAQ

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

A:NSV or OEM service.

2. Q:Is there have MOQ?

A：No.we can accept 1set,but there have additional cost $150.00(process of export) if the order value within $2000.00.

3. Q: What’s your payment terms?

A: As our company’s policy, we normally have bellow 3 payment terms,it also can negotiation both parties before confirm order.
1) 100% T/T or West Union in advance that order value within $2,000.00USD.

2)30% T/T advance+70% balance after the shipment for the order value above $2,000.00USD.

3)L/C at sight for the order value above $50,000.00USD.

Through extensive participation in international cooperation, our company has established good and stable business relations with many international well-known enterprises, and has a high market influence and appeal in the Double Block and Bleed Ball Valve industry. We now fully implements a quality management system and a modern independent mode of management and operation system, laying the foundation for the company's future innovation and development. The implementation of the new management system improvement plan we formulated will support the company's development strategy, employee quality improvement and corporate culture construction.