VMV水波纹
Pump Trap

Pump Trap System

① Convenient Replacement and Maintenance

Open the valve cover at a glance without removing the pipe connection

High temperature alloy spring is used for long-term stable operation at 540°C

The valve seat and valve core are made of stainless steel, and the closing pair adopts flexible closing system with small wear, reliable closing and long service

PrecisionWelding of key partsThe accuracy of key parts of stellite alloy can reach μm levelThe key parts are welded with Stelli alloy, and the precision of key

1、 Condensate delivery capacity kg / h
2、 Back pressure (head of delivery) MPa
3、 Power steam (air)
4、 Power steam (air) pressure MPa
5. Water inlet normal diameter DN
6. Water outlet normal diameter DN

VMV condensate recovery pump (pump trap) first came from foreign technology, originally meaning “pump trap”, also known as mechanical power pump. It uses the principle of steam trap and relies on steam, air and other gases as power to transport condensate from low-pressure area to high-pressure area, or from negative pres-sure area (vacuum) to normal pressure area.

Working Principle

Enter condensate and exhaust steam(air)

working Principle 1
working Principle 2

At the beginning, the water inlet check valve is opening, the water outlet check valve is closed due to high back pressure, the water start to enter the pump, and the floating ball is at a low level,with the rise of water level and the opening of exhaust valve, the floating ball reaches the highest controller and is in the switching critical

Enter steam(air) and exhaust condensate

working Principle close 1
working Principle close 2

The controller starts switching at the high position and closes the exhaust valve: open the power steam(air), inject steam into the valve, and push the condensate in the pump to the high-pressure area under the steam pressure: at this time, the water inlet check valve cannot feed water due to the high pressure in the pump. 

Get More Information

Design Standards

• GB / T22654-2008 Technical conditions for steam traps

• GB / T12251-2005 Test methods for steam traps
• GB / T12224-2005 General requirements for steel valves

 

Nominal PressurePN16 (150LB)Design pressure of valve body2.5MPaWater inlet diameterDN80 RF
Maximum
Allowable Pressure
1.6MPa / 204℃Maximum Allowable Temperature300℃ /1.23MPaWater outlet diameterDN50 RF
Maximum
Working Pressure
1.37MPa /250℃Maximum Operating Temperature250℃ /1.37MPaSteam outlet diameter1” RC
Maximum
Power Steam
Inlet Pressure
1.37MPaSteam (Air) ConsumptionSteam 5kg / T condensate air 7.6m3/T condensateSteam inlet diameter1/2” RC
Valve Body,CapWCBFloat304
Valve Seat420Control Rack304+Stellite
Valve Core440CFastenerCarbon steel grade 8.8
SpringNi Base SuperalloyGasketSS304+flexible graphite

WCB/A105Material PN16 valve shell pressure temperature rating

WCB A105Material PN16

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