T968y Electric Regulating Valve

• Temperature: Ordinary Temperature
• Certification: GS
• Media: Gas, Oil, Water, Acid
• Standard: Standard
• Connection Mode: Flange
• Power: Manual
• Model NO.: T968Y
• Material: Stainless Steel
• Type: Self-Operated
• Use: Adjust
• Pressure: Normal Pressure
• Port of Ningbo: Class IV (Standard, Metal Seat)
• Body Type: Straight Through, Angle, Z Shape
• Transport Package: Wooden Box
• Specification: DN15-DN500
• Trademark: xc
• Origin: China
• HS Code: 8481804090
• Production Capacity: 10000

Product Description

 Product name: electric regulating valve
Electric (T968Y) regulating valve, in order to improve the economy of the power plant, the steam turbine is equipped with a return heat system. That is, equipped with a high and low pressure heater, in order to ensure that the heater has a water level operation, to prevent the heater from running without water level, the steam extraction of the upper stage of the steam turbine into the next stage of the steam extraction and reduce the efficiency of the steam turbine and the safety of the equipment, in the heater drain system are equipped with a drain control valve, which according to the water level signal of the heater, automatically switch the drain regulation valve opening, So that the heater water level is always kept within a certain range. Drainage control valve working conditions are very poor, in many cases in the two-phase fluid work (that is, the mixed state of soda), but also belongs to the throttling state of operation, cavitation is quite serious, cavitation to a certain extent can not play the role of drainage control valve, in this situation. The heater can not guarantee the operation of the water level, which reduces the economy of the steam turbine operation. It can be seen that the choice of small cavitation, low noise, simple structure, reliable performance of the steam trap control valve is particularly important. In view of the above working conditions, our factory has researched and designed and manufactured a new type of drainage control valve, which is based on the original drainage control valve, and draws foreign experience, and has carried out reforms in structure and material, so that the valve has good working performance. Due to the use of reasonable spool and valve seat contact surface Angle, so the valve in the closed state no leakage phenomenon; The material of making the flow shield and valve core is made of high-quality stainless steel material, even in the two-phase flow and throttling state operation, the cavitation speed is quite slow, so that the service life of the valve is extended, and the noise is very small. Valve design are easy to install and disassemble the structure, when the internal parts are damaged, as long as remove the valve cap nut, you can take out each part in turn, free to exchange any parts, maintenance is very convenient.
Second, the working principle
of T968Y series heating water level drainage control valve is composed of electric actuator and drainage control valve two parts. The input of the electric regulating valve is the direct current signal sent by the regulator, which is amplified by the servo amplifier to drive the actuator, generate axial thrust, drive the regulating valve action, thereby causing the change of the medium flow rate to adjust various parameters in the system. At the same time, the actuator sends out a valve position signal for the servo amplifier to compare, so that the regulating valve is always maintained in a position corresponding to the input signal to complete the servo adjustment task
Three, the main technical parameters

Nominal diameter DN(mm)	50	80	100	150	200	250	300
Flow characteristics	Approximate linear, approximate, and other percentages
Nominal pressure PN(MPa)	2.5/6.4
Connection type	Welding
Accessorize with actuators	ZKD type
Stroke L(mm)	57.6				88.2
Maximum pressure difference △P(MPa)	0.5/3
Rated flow coefficient Cv	44	99	175	395	640	1000	1440
Operating temperature t (° C)	450 or less				450 or less
Use medium	water

Note: 1. This model also has flange type, right Angle type, and flange right Angle type
2. Can also be equipped with pneumatic actuator or HQ intelligent actuator
Four, the main technical performance indicators

Projects	Technical performance indicators
Basic error (%)	Not more than ±2.5
Return difference (%)	1.5 or less
Dead zone (%)	3 or less
Amount of leak	0.01% x rated valve capacity

5. Main materials of valve

Name	Materials
Body	WCB, WC6, 20CrMo
Spool	316 stainless steel
Shrouds	17-4PH
Stem	17-4PH
Valve seat	316 stainless steel

Six, the overall size

Nominal diameter DN(mm)	50	80	100	150	200	250	300
H(mm)	860	918	918	918	1460	1690	1690
H1(mm)	120	248	248	248	360	470	470
L(mm)	300	372	372	372	490	610	610
D1(mm)	90	150	180	200	244	355	420
D2(mm)	76	104	127	168	210	270	320
D3(mm)	50	80	100	140	180	230	270