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Series-NVII
Vannes à pointeau pour un contrôle précis du débit, corps en laiton forgé à chaud
Needle Valves for Precise Flow Control, Hot-Forged Brass Body
Modèles en stock
- Pressions jusqu'à 2000 psi
- Construction monobloc du corps
- Conception inviolable et tige résistante à l'éclatement
Series-NVII
À partir de
SGD
49.66
Modèles en stock
Aperçu du produit
- Applications Mesure et contrôle des fluides, Industrie et fabrication
- Coefficient de débit 0.31
- Matériaux en contact avec le fluide Laiton, Fluoroélastomère
- Compatibilité avec les fluides Air sec propre / gaz inerte, Liquides
- Température de fonctionnement, max 350 °F
- Température de fonctionnement, min -40 °F
- Taille du port 1 1/4 po
- Taille du port 2 1/4 po
- Type du port 2 NPT femelle
- Pression d'épreuve Jusqu'à 2000 psi
- Pression d'épreuve Remarque 2000 psi (CWP)
- ID de série Series-NVII
- Poids 0.22 lb
Supported Applications
The Dwyer Series NVII Needle Valves are designed for easy flow regulation, including shut off and throttling functions. These valves serve pressure gages and instruments in applications involving gases and liquids compatible with the specified wetted materials.
- Shut off control
- Throttling for pressure gages and instruments
Operating Conditions & Performance
The Series NVII operates within a process temperature range of -40 to 350°F (-40 to 176.7°C). A warning in the specifications notes that freezing of the fluid in the installation may severely damage the valve.
- Pressure Limit: 2000 psi (138 bar) (CWP)
- Flow Coefficient: 0.31
- Service: Gases and liquids compatible with wetted materials; not rated for steam use
Configuration Options
The series features a one-piece, hot-forged brass body construction intended to provide maintenance-free service. Design elements include a tamper-proof design and a blowout-proof stem.
Wetted Materials
- Valve body: Brass (CW617N)
- Retainer, handwheel: Brass (CW614N)
- O-ring: Fluoroelastomer
Connections and Dimensions
- End Connection Size: 1/4" NPT
- Weight: 0.22 lb.
The series supports two distinct connection configurations:
- NVII-1B: Needle valve (female x female)
- NVII-2B: Needle valve (male x female)
Safety and Compliance
USA: California Proposition 65 warning applies. This product may expose users to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm.
Key Product Differences
The Series NVII differentiates its models by end connection orientation:
- NVII-1B provides a female x female configuration.
- NVII-2B provides a male x female configuration.
PDF & Manuels
