Basic Info.
Model NO.
DBB valve
Material
Stainless Steel
Pressure
High Pressure
Standard
Standard
Media
Oil, Gas, Water,Acid
Media Temperature
Medium Temperature
Delivery
Fast Delivery
Type
Dbb Valve
Transport Package
Wooden Case
Specification
1/2
Trademark
NAI LOK/OEM
Origin
China
HS Code
8481804090
Production Capacity
10000
Product Description
NAI-LOK Instrument Double Block & Bleed Valves Hastalloy DBB Ball Valves Single Flange SBB Valves
Double Block and DBB Ball Valve has Dual ball structure which evolved to replace and add the process of bolting together individual valves to make the valves in one body. it saved a lot of space and material, it is the development tendency of the valve in the future.
Features:
Features:
1.ANSI B16.5 flanged inlet connections 1/2" to 2" sizes
Class 150 rated to class 2500 rated.
2.1/2"-1" FNPT thread outlet to ANSI/ASME B1.20.1(Depending on bore size)
3.1/2"FNPT thread vent connection to ANSI/ASME B1.20.1
4.Standard materials of stainless steel ASTM A182 F316/F316L
5.Optional materials include super duplex,Monel,Hastelloy,Inconel
6.Raised face to ring type joint flange styles
7.One-piece forged construction flange as standard
8.Fire safe desined.
DBB Ball Valves (Double block & bleed)
Double block & bleed ball valves are mainly suitable for the instrumentation but is also required as an alternative to the in-line installation of two valves.
Thanks to a DBB ball valve, it is possible to have the same result reducing costs, overall dimensions and the ability to bleed off the plant, by controlling a potential leakage of the plant.
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.
Main applications in the petrochemical field:
- Cryogenic service.
- Low temperature.
- Ambient temperature.
- High temperature.
- Corrosive fluids.
- High pressures.
- Samplings from line.
- Fluids injection.
