Metal To Metal Double Block&bleed Ball Valve

Metal To Metal Double Block&bleed Ball Valves are designed with metal spheres and metal seats.This kind of unique design that allows them to withstand higher temperatures and pressures while eliminating the need for traditional soft seals, That is greatly increasing valve durability and reliability. The valve is widely used in oil, natural gas, chemical, electric power and other industries.

VALVE DESIGN

API 6D, API 6A, ASME B16.34, ISO 14313, ISO 10423, ISO 17292

TEMPERATURE RANGE

-58 to 392°F (-50 to 200°C)

SIZE

NPS 1-12 (DN 25-300)

PRESSURE RATING

ASME 150 - ASME 2500

FACE-TO-FACE

As per API 6D standard

END CONNECTIONS

Our products offer a variety of standard end connections to meet different application scenarios and customer needs. The details include:

1. Flange Connections
RF (Raised Face) flange: Manufactured according to ASME B16.5 standard, with a raised sealing surface, suitable for a variety of low and medium pressure sealing applications.
RTJ (Ring Type Joint) flange: also comply with ASME B16.5 and ASME B16.47 standards, using ring gasket, suitable for high pressure, high temperature and corrosive media sealing.
2. Butt Welded Connections (BW)
In strict accordance with ASME B16.25 standard for butt welding connection, to ensure weld strength and sealing performance, suitable for high pressure, high temperature and important piping system.
3. Socket Welded Connections (SW)
Perform socket welding in accordance with ASME B16.11 standard to connect pipes to fittings by filling metal for medium to low pressure and small diameter piping systems.

MATERIALS

1. Low temperature and low alloy carbon steel: suitable for low temperature environment and need high strength, good toughness occasions.
2. Stainless steel: including ordinary stainless steel, Duplex stainless steel (Duplex) and Super duplex stainless steel (Super Duplex), with excellent corrosion resistance and mechanical properties, suitable for a variety of corrosive media and high temperature and high pressure environment.
3. Nickel alloy: Excellent corrosion resistance, high temperature strength and good processing performance, suitable for extreme corrosive environment and high temperature and pressure conditions.
4. Titanium: has very low density, high strength, excellent corrosion resistance and biocompatibility, especially suitable for aerospace, chemical, medical and other fields.

BODY DESIGN

Forged and casting bolted two-piece and three-piece

SEAT DESIGN

Metal seated with Hard facing on ball and seats
 

FEATURES

Double block and bleed design (DBB)
Secondary seals in pure Graphite
Anti-Static Device
Anti Blow out stem
Emergency sealant injection on seats and stem available
Low fugitive emission stem packing available
O-ring /Lip seals and Graphite configuration
CRA overlay on all dynamic sealing areas or on all wetted parts available
Extended bonnet for low & high temperature available

OPERATOR

Manual: wrench or Gear with padlocking
Actuated: Pneumatic/ Hydraulic/Electric

TESTING & CERTIFICATIONS

Compliance with API 6D & ISO 5208 & API 598 inspection and testing
Fire safe and fire tested as per API 607
SIL 3 Certification as per IEC61508
Fugitive Emission as per ISO15848
PED 2014/68/UE

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