Desuperheater

Detil Produk :

Variable Nozzle Desuperheater
Features
Available in 6 and 9 nozzle design
 Compatible with both pneumatic and electric actuators
Highlights
Design as ANSI B 16.34
Graphite packing provided for optimal sealing with stem
Suitable to fit a variety of yokes. (ideal with - Forbes Marshall make Pneumatic Diaphragm Actuator)
Fabricated body - available in Carbon Steel/Alloy Steel/Stainless Steel (other materials available on request)
Stem - ground, hardened and roller burnished to a fine for optimum performance
Ensures back - seat sealing due to fine machining and lapping of the seat after welding
High performance spray head assembly. Gives fine atomisation of spray water
Entire assembly shall be provided with IBR approval

Typical Sizes
For Model 38 :
             Steam Side Flange : 3"
             Water Side Flange : 1", 1 1/2"
For Model 48 :
             Steam Side Flange : 4"
             Water Side Flange : 1", 1 1/2", 2"
Pressure Rating : Up to ANSI #2500
Available Forbes Marshall Pneumatic Actuator for mounting
             A. 'A' to 'Dx' Nozzles UIII-60 n/v
             B. 'E' to 'H' Nozzles : UV-100 n/v
Rangeability
             For 6 Nozzle Head : 1 : 18
             For 9 Nozzle Head : 1 : 27
             For Mixed Nozzle Head : More Than 1 : 27 (as per Customer's Speifications) 

Detil Produk :

Minicooler Desuperheater (MCD)
This is unique device for specific applications like Ejector/Gland Sealing Steam where cooling water injection quantity is too low. This simple design involves fixed nozzle and cools the steam by injecting a little water in the zone where steam has highest turbulence.

Notes 
for use with pipe sizes 1" to 4"
Single nozzle Kv as low as 0.0162 and as high as 1.6
ideal for use with Forbes Marshall make water control valve and control system
Turndown ratio up to 1:4
Spray water should be very clean (equivalent to boiler feedwater)

Advantages
Instantaneous water mixing
Less straight length requirement
Absence of moving parts avoids possibility of chocking 

Detil Produk :

Fixed Nozzle Desuperheater (FND)
Features
Single nozzle Kv as low as 0.0162 m3/hr and as high as 1.6 m3/hr
Number of nozzles limited only by pipeline diameter
For use on all pipe sizes 6" and above
Ideal for use in conjunction with water control valve and control system
Turndown ratio up to 4 : 1 (Depending on water quantity)

Notes
Minimum pipe size required for installation of FND is 150mm
Water pressure should be minimum 7 bar more than the steam pressure
maximum recommended pressure difference between steam and water is 45 bar. if it exceeds 45 bar then install pressure control valve in waterline to reduce water pressure within limits
Spray water should be very clean (equivalent to boiler feedwater)
IBR approval shall be provided for individual components
Turndown ratio up to 1 : 4

Typical Sizes
Steam side flange : 4" and water side flange 1" / 1 1/2" OR Steam side flange : 6" and water side flange 2"
Pressure rating :upto ANSI #2500

Advantages
Custom made for any size, standard or range
Simple installation
Can be used for higher pipe size and low steam pressure
No moving parts