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Parker 超高纯度阀门
Parker Ultra High Purity Valves
High Flow, Compact Size Diaphragm Valve - NV70 Series
The NV70 is an economical, general purpose, high flow diaphragm valve ideally suited when flowing large volumes of corrosive and non-corrosive fluids.
The NV70 is an economical, general purpose, high flow diaphragm valve ideally suited when flowing large volumes of corrosive and non-corrosive fluids. This compact, 316L stainless steel valve ensures positive and consistent shut off with manual or air actuation. The NV70 uses a high fatigue strength diaphragm (Elgiloy) that creates an external metal seal, and provides a reliable seal to atmosphere. Internally threadless and springless. High cycle life. Compact size. Positive, consistent shut off. Metal-to-metal seal to atmosphere. Cleaned for O2 service. Ideal for high flow applications. Fully functional from vacuum to 150 psig for AOPLPNO / AOPLPNC valves and 250 psig for manual valves.
High Flow, Compact Size Diaphragm Valve - NV70 Series 
Technical Specifications
| Body Material: |
316L Stainless Steel |
| Diaphragm Material: |
Elgiloy, Equivalent |
| Seat Material: |
PCTFE (std), Polyimide |
| Cap Material: |
17-4 PH Stainless Steel, N/A |
| Nut Material: |
17-4 PH Stainless Steel |
| Actuator Housing Material: |
N/A, Anodized Aluminum |
| Burst Pressure: |
750 psig (52 barg) |
| Proof Pressure: |
375 psig (26 barg) |
| Flow Rate: |
Cv .7 (AOP versions, Indicator Knob, Handwheel) |
| Internal Leak Rate: |
Bubble Tight |
| External Leak Rate: |
Bubble Tight |
| Volume: |
4.9 cm3 |
| Weight: |
1.2 lb, 0.55 kg |
| Maximum Inlet Pressure Rating: |
150, 250 psig / 10.3, 17.2 barg |
| Minimum Inlet Pressure Rating: |
Vacuum |
| Actuation Pressure: |
N/A, 70-125 psig |
| Air Inlet Connection Size: |
N/A, 1/8" NPT |
| Maximum Operating Temperature: |
66 °C, 150 °F |
| Minimum Operating Temperature: |
-40 °C, -40 °F |
High Flow, Compact Size Diaphragm Valve - NV70 Series 型号
| Part |
Actuation |
Connection |
| 54020848 |
Spin Handwheel |
1/2" Male NPT In & Out |
| 54020928 |
Spin Handwheel |
1/2" Compression In & Out |
| 54020929 |
Spin Handwheel |
1/2" Female NPT In & Out |
| 54021157 |
Air Operated, Low Pressure, Normally Closed |
1/2" Compression In & Out |
| 54021158 |
Indicator Knob |
1/2" Compression In & Out |
| 54021227 |
Air Operated, Low Pressure, Normally Closed |
1/2" Female NPT In & Out |
| 54021228 |
Indicator Knob |
1/2" Female NPT In & Out |
| 54021409 |
Air Operated, Low Pressure, Normally Closed |
1/2" Male NPT In & Out |
| 54021410 |
Indicator Knob |
1/2" Male NPT In & Out |
| 54022501 |
Air Operated, Low Pressure, Normally Open |
1/2" Compression In & Out |
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