Power Distribution Equipment

Self Operated Micro Pressure Automatic Control Valve with -20 - +150 ℃ Work Temp

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Self-operated micro-pressure single-seat control valve

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ZZV Series of Self-operated Micro Pressure Control Valve, there is no need for any external power source, only used fluid own energy to adjusted the valve opening automatically, The valve uses the regulating mechanism which has quick open flow characteristic of balanced single-seat valve, without packing and frictionless movable components internal, it makes fluid pressure stable, high precision adjusting, which could control micro pressure conditions and make sure safe and reliable sealing performance, arbitrary adjust of set value could be also achieved during operation. So it is widely used for the micro pressure automatic regulation sites of all kinds of fuel, half-finished petroleum of the industrial furnace burning system, oil tank stocking protective gas and heat treatment protective gas etc.

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Characteristics

1. Without any external driving?energy,?low cost；

2. Simple structure, little maintenance work;

3. The set point?can be adjusted and the?range is wide, convenient for the user to do continuous?adjustment;

4. Using the pressure?balance?valve?structure,?ensure the constant pressure of medium;

5. Body?pressure,?convenient pipe installation

6. No packing,?frictionless?movable?components,?sensitive control,?high control precision.

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Specifications and technical parameters

1. Main technical parameters of ZZV standard??????????????????????????????????????????? Table 1

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DN(mm) | 15 | 20 | 25 | 32 | 40 | 50 | 65 | 80 | 100 | 125 | 150 |
Rated flow coefficient Kv | 3.2 | 6.3 | 10 | 16 | 25 | 40 | 63 | 100 | 160 | 250 | 400 |
Rated travel L(mm) | 10 | 20 | 30 |
Actuator type | Diaphragm type:600,400,200cm2(choose actuator according to pressure) |
PN(MPa) | 1.0,1.6 |
Inherent flow characteristic | Quick opening |
Action type | Press to close (control outlet), press to open (control inlet) |
Structure type | Single seat?pressure balance type |
Inherent?adjustable ratio R | 30 |
Regulation accuracy (%) | ±5 |
Medium temperature (℃) | Gas＜120℃ |
Allowable leakage | Ⅵ,Zero leakage (soft sealing) |
Flange connection | PN1.6MPa according to HG/T20592-2009 RF,Raised surface |
Pressure regulating range (KPa) | 0.25～3,0.5～5,3～10,5～14,10～20,20～30 25～40,40～55,50～70,70～85,80～100 |
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2. Main technical parameters of ZZV standard?? KV≤7 ??????????????????????????????????????Table 2

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DN(mm) | 15??? 20?? 25 |
Seat diameter dn(mm) | 20 |
rated flow coefficient Kv | 0.2 | 0.32 | 0.5 | 0.8 | 1.2 | 2.0 | 3.2 | 7 |
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Note:
# # ?Production can be according to customers’ special requirements;


2. Flange can be produced according to ANSI,JIS, etc.;?

3. when the flow is small the diameter stays unchanged; use valve throttling?device to achieve customers’ requirements.?