Engineering Cases

Bypass regulating valve for water pump

The feed water regulating valve is mainly used in the boiler feed water system, its function is to supply water to the evaporator and regulate the feed water flow

Classification:

Valve products

Classic Case

Case description

Application

The feed water regulating valve is mainly used in the boiler feed water system, its function is to supply water to the evaporator and regulate the feed water flow, so as to maintain the evaporator water level at a reference value corresponding to the change of steam turbine load. Suitable for water supply flow regulation of 125, 200, 300, 600, 1000MW units.

Characteristic

• Body and bonnet are forged as a whole, and other pressure parts are forgings with uniform structure and beautiful appearance to avoid possible casting defects;

• The inner part adopts the pressing type porous superposition step-down structure, which changes the traditional step-down for this step-down, with compact structure, anti-cavitation, low noise, easy installation and maintenance;

• The valve cover and inner parts are sealed with step type limit, and the stem packing is sealed with V-shaped flexible graphite and strengthened forming graphite to improve the sealing performance;

• Regulating valve can be equipped with our pneumatic actuator, or according to customer requirements with other brands of pneumatic, electric or hydraulic actuator.

Design Guides

Design and manufacture	Inspection and test	Pressure and temperature reference
NB/T47044	GB/T10869	NB/T 47044

Product Range

Nominal pressure	PN160～PN420（Class900—Class2500）
Nominal size	DN50～DN400（NPS 2～NPS16）
Body matenal	20、A105、F36.CL2
Applicable Temperature	-29℃～425℃
Applicable medium	Steam, water

Note：

1、The valve beyond the above specifications can be customized according to user requirements;

2、The applicable temperature range of each valve shall be subject to the actual pressure bearing material of the valve.

Minimum flow control valve

Supercritical forged steel gate valve

Classic Case

Guangda Environmental Protection Boluo Project

Dongguan Ningzhou Gas-fired Power Generation Project

Huadian Jurong 4x1000MW units

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