DeFlo VSD – Variable Spray Desuperheater

Mascot’s Variable Spray Desuperheater (VSD) stands out with a remarkable turndown ratio, adjusting the spray water with the in built control valve. The VSD ensures consistent atomization across all flows due to a constant nozzle pressure drop. It features a swirling hollow cone spray pattern for water exit at a higher velocity and better atomization. Size ranges from 0.5″ to 4″ water inlet line, with pressure ratings of 150# to 4500#. The VSD’s versatile design accommodates various steam pipelines with no size limitation, delivering an impressive turndown ratio of 80:1.

Sizes:

Inlet: 0.5″ to 4.0″; Terminal Flange 3.0″ to 6.0″

Pressure Rating:

150# to 2500#

REQUEST A QUOTE

DeFlo VSD – Variable Spray Desuperheater

Features
Specifications
Downloads

Probe Type Design: The nozzle is not suspended into the steam line and only protrudes into the steam like about a couple of inches to ensure that the pipe geometry isn’t changed much eliminating undue stresses generated by conventional desuperheaters.
Variable Spray Technology: The VSD offers a true variable spray pattern ensuring uniform, stable and accurate temperature control unlike the competing multiple nozzle spray desuperheaters where the spray pattern increases in a step like manner causing uncontrollability issues and fluctuation in outlet temperature.
Probe Injection: As opposed to the conventional multiple nozzle desuperheaters where water is injected from the center of the steam line by protruding the desuperheater into the steam line the VSD’s probe type installation makes sure that the pipe geometry isn’t changed much and avoids any thermal stresses or vibrations generated as a result of the protrusion into the steam line.
Instant Evaporation: The nozzle is so designed that the velocity of the water increases before it enters the throttle point so as to ensure that the Vena Contracta is closer to the injection point ensuring that the atomized water is instantly vaporized into the steam line protecting it from any water hammering or pitting.
Precise Temperature Control: Since there is a single nozzle with continuously varying orifice the quantity of water increases constantly with the opening of the desuperheater resulting in a precise control of the temperature of the superheated steam, ensuring it meets the required process conditions.
Ease of Installation: Designed for easy integration into existing steam systems, allowing for convenient installation and minimal disruption to operations.
Energy Efficiency: Aims to contribute to energy efficiency by maintaining steam temperatures at desired levels, optimizing overall system performance.

Description	Specification
Sizes	Inlet: 0.5" to 4.0"; Terminal Flange 3.0" to 6.0"
Pressure Rating	150# to 2500#
Body Styles	Standard - Probe Type
End Connections	Integral Flange (ANSI - RF, RTJ, FF, DIN EN 1092 Types A to H, GOST, SANS, JIS)
Body Materials	A106 P11/F11, P22/F22, P91/F91 Other Grades on request
Trim Materials	SS 316L 17-4PH, SS 410 HT, SS 416 HT, SS 440C HT Inconel 625, Inconel 718 Solid Stellite Stellite Overlay Others on request
Shutoff Class	FCI 70-2 Class IV, V, VI. Optional as per API 598
Service	General, High DP, Low Flow, Cavitating
Bonnets	Standard
Flow Characteristic	Equal Percentage, Linear, Bi-Linear, Custom
Standards	ANSI, ISA, PED, NACE, CRN, GOST, SANS/SABS, JIS, EN/DIN

Product Catalogue

DeFlo VSD – Variable Spray Desuperheater

21/12/2023

Industries

Oil & Gas

Power

Petrochemicals

Pulp & Paper

LNG

Chemical Processing

Pharmaceuticals

Space Research

Mining & Metals

Industrial Gases & Cryogenic

Food & Beverage

Sugar & Distilleries

Sizes:

Pressure Rating:

Product Catalogue

INDIA FACILITY

US FACILITY

Subscribe to get the latest updates from MASCOT!