Enercor Industries

MOOn Flange

Flanges & Fittings

Moon Flange valve

A Monoflange Double Block and Bleed (DBB) valve is a compact valve that combines multiple functions into a single unit. It is typically used in oil and gas production, chemical processing, and other industries where it is important to isolate and control the flow of fluids in a pipeline.

The Monoflange DBB valve consists of a single block valve with two independent seats, which are designed to provide double block and bleed capability. This means that the valve can isolate both upstream and downstream fluid flow, as well as provide a means of venting or draining the space between the two seats.

In addition to the block and bleed function, the Monoflange DBB valve also has a built-in vent port that allows for pressure equalization and a means of verifying that the valve is in the closed position. The vent port can also be used to safely vent hazardous gases or fluids that may be present in the system.


Monoflange DBB valves are typically designed with a compact, space-saving profile, which makes them ideal for applications where space is limited. They are also relatively easy to install, maintain, and operate.

Some additional features of Monoflange DBB valves may include:

  • High pressure and temperature ratings, allowing for use in demanding applications
  • Corrosion-resistant materials, such as stainless steel or other alloys, for use in harsh environments
  • Optional locking devices to prevent unauthorized or accidental operation of the valve
  • Optional thermal insulation to protect against extreme temperatures

Overall, Monoflange DBB valves provide a reliable and efficient means of controlling fluid flow in a pipeline while minimizing the need for multiple valves and fittings.


 Process : Flange as per ANSI B16.5

 Instrument : ½” NPT (F)

 Drain/Vent : ¼” NPT (F)

 Test Pressure

 @ 25°C Room Temperature

  Hydrostatic : Body – 415 bar(g)

                          Seat – 415 bar (g)

  Pneumatic :  Seat – 7 bar(g)

 Gland Packing

 PTFE : Standard

 GRAPHOIL : Temperatures above 200°C


 A 105, A 182 GR F 304,

 A 182 GR F 316, Monel, Hastelloy, Duplex


 CS zinc plated,  SS Natural