Delta-Elektrogas NV Needle valves

NV type valves are designed for fine-adjusting of gas flow and air flow in industrial combustion


Valves are made of aluminum, with wide range of threaded connections.
Suitable for use with air and non-aggressive gases according to EN 437. For heated air or
aggressive gases a special version is available.
Valves are operated manually using an Allen key to set the precise fire rate of the burner.
All components are designed to withstand any mechanical, chemical, thermal condition
occurring during typical service. Effective impregnation and surface treatments have been used
to improve mechanical sturdiness, sealing and resistance to corrosion of the components.


The valve is provided with a taper plunger that can be adjusted sensitively with an Allen wrench,
turning the screw counterclockwise increases flow, then a locking nut allows to hold the
regulation. A plastic cap hides the adjustment to avoid tampering with the setting.


Connections Internal threaded ISO 7-1 from Rp3/8 to Rp2½
ANSI-ASME B1.20 from 3/8” NPT to 2”½NPT
Flanged ISO 7005 PN16 from DN40 to DN300
ANSI-ASA-ASME B16.5 class 150 from 2” to 10”
Voltage ratings 230 VAC 50/60 Hz
110 VAC 50/60 Hz
Voltage tolerance -15% to +10%
Temperature -15°C to +60°C (+5°F to +140°F)
Max. operating pressure 600 mbar (9 psig)
6 bar (90 psig)
Body test pressure 1 bar (15 psig)
9 bar * (130 psig)
Closing time < 1 second
Gas strainer 600 µm (0.02 in), metal mesh (except 6 bar models)
Enclosure IP54 (NEMA 3)
(IP65 optional with cable NEMA 4)
Cable gland PG 9
Wires cross-section 1,5 mm2 max. (AWG 14)
Electrical safety Class I (EN 60335-1)
Coil winding insulation Class H (200°C, 392°F)
Coil thermal resistance Class F (155°C, 311°F)


Datasheet : Delta-Elektrogas NV Needle valves

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