HVNF4-15K-DO-NC Pneumatic Control Needle Valve

Define the HVNF4-15K-DO-NC Pneumatic Control Needle Valve for remote on-off operation in industrial process equipment. This model pairs a needle valve with a diaphragm air operator in a normally closed, air-to-open configuration.

The selected catalogue row lists a 1/4-inch tube outside diameter, a 15,000 psi (1,035 bar) maximum operating pressure, and a 65 psi (4.48 bar) air-drive pressure.

For equipment manufacturers and system integrators, these values provide a starting point for reviewing the process connection and pneumatic control requirements.

Built Around an Air-to-Open Control Sequence

The diaphragm operator uses pneumatic pressure to actuate the valve, so an opening command can come from a remote air-control arrangement.

The normally closed configuration should form part of the equipment’s control description. Record the intended valve state and switching sequence in the circuit drawing, then confirm the actuation requirements at the planned process pressure.

This approach helps align the selected valve with the machine’s operating sequence. It also gives purchasing teams a clear configuration to reference when ordering.

HVNF4-15K-DO-NC Specifications

These specifications apply to the HVNF4-15K-DO-NC row. Confirm the complete valve and actuator drawing during selection, including the process connections and air port.

Integration Questions for Equipment Builders

How should the process connection be specified?

Use the listed 1/4-inch tube outside diameter as the size reference. Then confirm the connection type, sealing geometry, and mating fittings against the approved drawing. Include both connection details in the assembly specification.

What air-supply information is required?

The catalogue lists 65 psi as the air-drive pressure. Provide the available control-air conditions and ask for confirmation of the required operating range for your process duty.

If response time matters, also state the required opening and closing times and the expected switching frequency.

Which fluid and temperature details should be supplied?

Identify the working medium, concentration where relevant, and operating temperature. These conditions support a review of the wetted materials, seals, and applicable operating limits.

What should be checked for installation?

Review overall dimensions, actuator clearance, fitting access, and mounting requirements. For replacement projects, provide the existing valve reference and installation drawing so the interfaces can be compared.

Define the Valve Package for Purchasing

An OEM inquiry should identify the complete model and the required supply scope. State whether the quotation should cover the valve assembly alone or include associated pneumatic controls, tubing, or fittings.

For technical review, provide:

• Normal and maximum process pressure.

• Working medium and temperature.

• Required flow and switching frequency.

• Available control-air pressure.

• Connection drawings and installation constraints.

• Required inspection records and documentation.

For repeat orders, reference the agreed configuration and identify any changes in operating conditions. Also, include the quantity, delivery destination, and required delivery date.

Request an HVNF4-15K-DO-NC Quotation

Send our team your process requirements and circuit drawing, where available. Specify HVNF4-15K-DO-NC so the proposal refers to the correct tube size, actuator arrangement, and listed air-drive pressure.

Request an HVNF4-15K-DO-NC pneumatic control needle valve quotation to discuss application suitability, supply scope, pricing, and lead time.