DANFLO FAMILY OF CONTROL VALVES

Product catalog summary

Overview: The document provides technical details about the DANFLO 400 Series control valves, specifically the Body Style 41, which are pilot-operated valves used in various industrial applications. These valves are designed for efficient flow control and are part of the product offerings by Celeros Flow Technology.

Pilot Operation: The pilot mechanism connects pressure from either upstream (Pu) or downstream (Pd) to the plug cavity (Pc) to open or close the valve. The internal poppet within the pilot shuttles based on the pressure differential sensed by a 'sense line' compared to the pilot spring force. The valve's default state (open or closed) is determined by the direction the spring 'points' relative to the flow.

Principle of Operation: The 400 Series valve features a dynamically balanced plug assembly that moves to open, close, or throttle based on pressure changes. The valve opens when the plug cavity is vented, allowing upstream pressure to overcome the spring force. Conversely, the valve closes when pressure is applied to the plug cavity.

Typical Valve Action: When Pc is connected to Pu, pressures are equalized, and the spring force closes the valve. Connecting Pc to Pd vents the plug cavity, allowing upstream pressure to open the valve.

Product Specifications: The document lists various models (10, 20, 35, 40) with specific control functions such as pressure reducing, back pressure/pressure relief, minimum differential pressure, and surge relief. These models are suitable for ANSI 150-1500 pressure ranges and have applications in process streams, pipelines, and protection against pressure surges.

Design Features: The DANFLO 400 Series valves are available in sizes ranging from 2 to 16 inches (50 to 400 mm) with corresponding Cv values indicating flow capacity. The valves are designed with features like cavitation and low-noise trim for enhanced performance.

Company Background: M&J Valve, now part of Celeros Flow Technology, has been a leader in the pipeline valve industry since 1962, offering a wide range of flow control solutions for various markets.

Important Note: Reversing the direction of the pilot sensing unit will reverse the valve plug response direction, highlighting the importance of correct installation and operation.

Catalog excerpts

DANFLO FAMILY OF CONTROL VALVES

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Technology. The M&J Valve brand meets or exceeds the quality standards of our customers and the valve industry. With a product offering of slab and expanding through-conduit gate valves, axial surge valves and rotary control valves, piston and swing check valves. Celeros can provide a wide variety of flow control solutions for liquid, geothermal and gas markets. This combination of products, technical know-how and field experience has allowed for a history of product innovation which has positioned Celeros in a leadership position within the valve industry. (1) The Volume of water in GPM at 60˚F...

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DANFLO FAMILY OF CONTROL VALVES QM&j VALVE* SPEED I EXCELLENCE I PARTNERSHIPTHE VERSATILE, EFFICIENT, COST-EFFECTIVE DANFLO CONTROL VALVE 400 SERIES (Illustrated) For use with pilots and controllers MODELS 10, 20, 35 & 40 Line Pressure Pilot FLOW Two basic designs with balanced, guided plug assemblies Celeros Flow Technology 8800 Westplain Dr. Houston, TX 77041 P: (800) 231-3690 or (281)469-0550 E: [email protected] Celeros Flow Technology reserves the right to incorporate our latest design and material changes without notice or obligation. Design features, materials of construction, and...

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DANFLO FAMILY OF CONTROL VALVES

DANFLO FAMILY OF CONTROL VALVES

Catalog excerpts

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