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NDL

NDL is a manufacturer of refrigeration and HVAC components, with a product line that includes ball valves, check valves, filter driers, and other flow-control devices. The brand is known for its NBV series of refrigeration ball valves, which are available in sweat, flare, and threaded connection types. These valves are used to isolate sections of refrigerant circuits for service and maintenance, and to control flow in commercial refrigeration, air conditioning, and process cooling systems. NDL products are typically specified by engineers and technicians who require reliable performance across a wide range of temperatures and pressures.

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About NDL

NDL is a manufacturer of refrigeration and HVAC components, with a product line that includes ball valves, check valves, filter driers, and other flow-control devices. The brand is known for its NBV series of refrigeration ball valves, which are available in sweat, flare, and threaded connection types. These valves are used to isolate sections of refrigerant circuits for service and maintenance, and to control flow in commercial refrigeration, air conditioning, and process cooling systems. NDL products are typically specified by engineers and technicians who require reliable performance across a wide range of temperatures and pressures.

The NBV series ball valves are constructed with brass bodies and feature blow-out proof stems, PTFE seats, and full-port or reduced-port designs depending on the model. They are rated for operating temperatures from -40°F to 302°F (-40°C to 150°C) and maximum working pressures of 700 psi or 900 psi, depending on the port size. The valves are compatible with common refrigerants, including R-410A, R-134a, R-22, and R-404A, as well as with glycol solutions and other heat transfer fluids. Available connection sizes range from 1/4 inch to 2-1/8 inch, with corresponding port sizes to match system flow requirements. The sweat connection versions are designed for brazing into copper tubing, while flare and threaded versions allow for mechanical connections.

3G Electric supplies the NDL line as part of its broader portfolio of industrial flow-control and refrigeration components. The company maintains inventory of popular NDL models, including the NBV02-S, NBV03-S, NBV04-S, NBV05-S, NBV06-S, NBV09-S, NBV13-S, and NBV17-S, among others. Each product listing includes detailed specifications such as port size, connection type, pressure rating, and temperature range, allowing buyers to verify compatibility with their systems. The company serves customers in various industries, including food and beverage processing, cold storage, petrochemical, and HVAC service, and can accommodate orders for both standard and hard-to-find items. With a focus on technical accuracy and supply chain reliability, 3G Electric aims to be a single source for NDL refrigeration valves and related components.

Common Applications

  • Commercial refrigeration — NDL NBV04-S sweat ball valve for isolating refrigerant flow in walk-in cooler lines
  • HVAC service — NDL NBV06-S ball valve for service access on split-system air conditioning units
  • Industrial process cooling — NDL NBV09-S ball valve for flow control in glycol chiller circuits
  • Food and beverage processing — NDL NBV13-S ball valve for refrigerant isolation in blast freezers
  • Cold storage — NDL NBV17-S ball valve for large-diameter suction lines in ammonia and HFC systems
  • Petrochemical — NDL NBV03-S ball valve for refrigerant sampling and maintenance in process cooling skids

Frequently asked questions

Common questions about NDL from 3G Electric.

What are the pressure and temperature ratings for NDL NBV series ball valves?

NDL NBV series ball valves are rated for a temperature range of -40°F to 302°F (-40°C to 150°C). Maximum working pressure depends on the valve size: models with port sizes up to 0.8 inch (e.g., NBV02-S through NBV06-S) are rated for 900 psi, while larger sizes (NBV09-S, NBV13-S, NBV17-S) are rated for 700 psi. These ratings apply to the valve body and seals under static conditions; actual system design should account for factors such as vibration, thermal cycling, and refrigerant compatibility. Always refer to the specific product datasheet for confirmation.

What connection types are available for NDL refrigeration ball valves?

NDL refrigeration ball valves are offered with sweat (braze), flare, and threaded connections. The sweat connection models, such as the NBV04-S and NBV06-S, are designed for brazing into copper tubing and are available in sizes from 1/4 inch to 2-1/8 inch. Flare and threaded versions are also available for applications where mechanical connections are preferred. The connection type is indicated by the suffix in the model number: '-S' denotes sweat, '-F' denotes flare, and '-T' denotes threaded. 3G Electric stocks a range of these connection types to suit different installation requirements.

Are NDL ball valves compatible with R-410A refrigerant?

Yes, NDL NBV series ball valves are compatible with R-410A and other common refrigerants, including R-134a, R-22, R-404A, and R-507. The valve construction uses materials that resist degradation from refrigerant oils and additives. The PTFE seats and seals are suitable for use with HFC and HCFC refrigerants, as well as with glycol solutions. However, for specific applications involving high-pressure refrigerants like R-410A, ensure that the valve's pressure rating meets or exceeds the system's maximum allowable working pressure. The 900 psi rated models are typically specified for R-410A systems.

What is the difference between the NDL NBV02-S and NBV03-S?

The NDL NBV02-S and NBV03-S are both sweat connection refrigeration ball valves with a 900 psi pressure rating and a temperature range of -40°F to 302°F. The primary difference is the connection size and port size: the NBV02-S has a 1/4 inch female sweat connection and a 0.3 inch port, while the NBV03-S has a 3/8 inch female sweat connection and a 0.4 inch port. The larger port on the NBV03-S allows for higher flow capacity, making it suitable for systems with greater refrigerant flow requirements. Both valves are used for isolation and flow control in HVAC and refrigeration circuits.

Can NDL ball valves be used in CO2 refrigeration systems?

NDL NBV series ball valves are not specifically rated for CO2 (R-744) refrigeration systems, which typically operate at higher pressures than the 700 psi or 900 psi ratings of these valves. CO2 systems often require components rated for pressures exceeding 1,200 psi. For CO2 applications, consult the manufacturer for suitable valve options. NDL ball valves are intended for use with conventional refrigerants such as R-410A, R-134a, and R-22, where system pressures fall within the published ratings. Always verify compatibility with the specific refrigerant and operating conditions.

Does 3G Electric supply NDL products?

Yes — 3G Electric (S) Pte. Ltd. supplies NDL products. We stock the NDL catalog and supply genuine factory-original products with full manufacturer warranty and technical support.