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Nitrogen supply device (nitrogen seal valve)

Products > Control valve > Nitrogen supply device (nitrogen seal valve)

Nitrogen supply device (nitrogen seal valve)

Model: ZZDQ
Nominal diameter: DN20 ~ 150mm
Nominal pressure: PN1.0 ~ 1.6 MPa
Main material: HT200, ZG230 ~ 450 ZG1Cr18Ni9Ti
valve, valve seat: 1Cr18Ni9Ti Stellite welding
flange standards: GB9113-88
Method Blue Cover Type: convex
Contact purchase
shared:

Product description:

Pressure regulator without additional energy, the use of the media itself is the media as the power source. Automatically control the valve medium flow, so that the pressure after the valve to maintain a constant pressure stabilizer. Has been widely used in continuous gas acquisition and transportation of natural gas, urban gas and metallurgical, petroleum, chemical and other industrial production sector. 
Valve Features: Control of high precision, general than ZZY type direct operation of the regulator about double high. Adjust the pressure ratio (such as the valve before 0.8MPa, valve 0.001MPa) is particularly suitable for micro-pressure gas control. 
Pressure set in the pilot to achieve, so convenient, fast, labor-saving time-saving can be run continuously set.

Part Information:

Valve body, bonnet: HT200, ZG230 ~ 450 ZG1Cr18Ni9Ti 
Spool, seat: 1Cr18Ni9Ti Stellite alloy surfacing 
Filler: Teflon 
rod, bushing: 2Cr13 

1, the main valve 
2, the main valve spool 
3, Main valve actuator 
4, throttle valve 
5, pressure reducing valve 
6, the pilot spool  
7, the detection mechanism 
8, the default spring 
9, the pilot

Technical Parameters:

Nominal diameter DN (mm)

20

25

40

50

80

100

150

Seat diameter (mm)

6

15

20

25

32

40

50

65

80

100

125

150

Rated flow coefficient KV

3.2

5

8

10

20

32

50

80

100

160

250

400

Pressure adjustment range Kpa

0.5 to 7 5 to 20 15 to 50 30 to 150

Nominal pressure PN (MPa)

1.0 1.6

The media temperature is adjusted (℃)

-20 ~ 90

Flow characteristics

Go ahead

Adjustment accuracy (%)

≤ 3

Actuator film effective area (cm 2)

200

280

400

Allow leakage

In line with ANSIB16.104-1976 level IV

Specifications Weight:

◆ Overall dimensions

Nominal diameter (DN)

20

25

32

40

50

65

80

100

125

150

Flange end distance (L)

150

160

180

200

230

290

310

350

400

480

H

610

610

630

630

640

710

720

730

800

930

H1

330

330

350

350

360

430

440

450

520

650

φ

310

400

D

105

115

140

150

165

185

200

220

250

285

D 1

75

85

100

110

125

145

160

180

210

240

D 2

56

65

76

84

99

118

132

156

184

211

nd

4-14

4-18

8-18

8-22

Connection standard:

◆ Connection Size and Standard
Flange Standard: GB9113-88; 
Flange Seal Face Type: Convex; 
Signal Interface: Female Thread M16X1.5; 
Distance between Body Flange and Flange End Face can be manufactured according to user-specified standard. 
Such as ANSI, JIS, JPI and other standards. 

◆ Ordering Information When
ordering, please provide the following information: 
· Regulator name and model 
· Nominal diameter (mm) 
· Nominal pressure (MPa) 
· Media name 
· Working pressure and range 
· Body material 
· Other special requirements


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