HNL Minifolds (Manifolds)

Our range of HNL Aluminium Minifolds, now available directly from British Rototherm, offers a compact and reliable solution for pressure measurement and instrumentation control. Designed to meet the rigorous demands of industrial environments, these "Minifolds" provide a durable and efficient way to manage multiple pressure connections from a single, space-saving unit.Manufactured from high-quality aluminium, HNL Minifolds deliver exceptional corrosion resistance and mechanical strength, making them an ideal fit for challenging applications across sectors such as food & beverage, chemical processing, and manufacturing.

Key Features

Key features and benefits.
1

Key Features

Each Minifold is manufactured using high-grade aluminium, ensuring a strong yet lightweight design that supports easy handling and installation. This makes them especially suitable for tight spaces and mobile applications where weight is a critical factor.
2

Key Features

The compact form factor allows for clean and efficient integration within complex instrumentation systems. This helps reduce clutter and simplifies maintenance in confined or hazardous environments.
3

Key Features

HNL Minifolds are designed to work seamlessly with a wide range of pressure switches, transmitters, and sensors. This flexibility ensures they can be adapted across multiple process lines and application setups without the need for custom solutions.

940 Series

Constructed with a durable brass body and featuring a thermoplastic spindle, these manifolds are offered in both 5-port and 10-port configurations with a 15mm bore size. Each outlet is designed for quick installation—simply insert your tubing and secure it with the compression nut.

Bore Size: 15 mm nominal
Inlet Thread: 3/8” BSPP or NPT INT
Outlets: 1/4” or 6 mm tube nuts
Number of Valves: 5 / 10
Length L (mm): 150 / 285
Fixing Centres F (mm): 81 / 216
Aluminium - Weight (kg): 0.57 / 1.09
Stainless Steel - Weight (kg): 1.42 / 2.72
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950 Series

Designed to accommodate twice the number of outputs compared to the Series 940 over the same block length, these Minifolds utilise the same proven output valve design. Available in 10-port or 20-port models with a 25mm nominal bore, they feature ready-to-use outlet connections—just insert your tube and tighten the nut for a secure fit.

Bore Size: 25 mm nominal
Inlet Thread: 3/8” BSPP or NPT INT
Outlets: 1/4” or 6 mm tube nuts
Number of Valves: 5 / 20
Length L (mm): 185 / 320
Fixing Centres F (mm): 95 / 230
Aluminium - Weight (kg): 1.13 / 2.04
Stainless Steel - Weight (kg): 2.90 / 5.10
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971 Series

Supplied with 1/4” threaded outlets to suit a wide range of pipe fittings, these Minifolds are offered in both 5-port and 10-port versions with an 18mm nominal bore. For added flexibility, models are also available with 6mm push-in connectors for quick tube installation.

Bore Size: 18 mm nominal
Inlet Thread: 1/2” BSPP or NPT INT
Outlets: 1/4” or 6 mm tube nuts
Number of Valves: 5 / 10
Length L (mm): 150 / 285
Fixing Centres F (mm): 81 / 216
Aluminium - Weight (kg): 0.54 / 1.04
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975 Series

As an upsised alternative to the Series 971, these models feature 3/8” threaded outlet ports compatible with a variety of pipe fittings. They come in 5-port or 10-port options and include a 25mm nominal bore for increased flow capacity.

Bore Size: 25 mm nominal
Inlet Thread: 3/4” BSPP or NPT INT
Outlets: 3/8” or 6 mm tube nuts
Number of Valves: 5 / 10
Length L (mm): 230 / 430
Fixing Centres F (mm): 120 / 320
Aluminium - Weight (kg): 1.58 / 2.95
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How do manifolds work?

HNL Minifolds act as compact distribution blocks designed to split or direct pneumatic or fluid pressure from a single inlet to multiple outlets. Each Minifold features one or more inlet ports and a series of outlet ports—typically 5, 10, or even 20—allowing for the efficient connection of multiple instruments, valves, or pressure switches from a single source.

Inside the robust aluminium body, the internal bore provides a common flow path, allowing pressure to be evenly distributed across all outlets. Depending on the model, outlet ports are either threaded (e.g., 1/4” or 3/8”) or push-in type, making installation quick and straightforward. Users simply connect their tubing or fittings to each outlet, ensuring a secure, sealed connection using compression nuts or threaded adapters.

Where are they used?

HNL Minifolds are widely used across a range of industrial and commercial applications where precise pressure control and efficient distribution are essential. Their compact design and robust aluminium construction make them ideal for installations where space is limited and reliability is critical.

Common areas of use include process control systems, the food and beverage iundustry, pharmaceutical manufacturing, chemical & petrochemical plants and general industrial automation.

Frequently Asked Questions

HNL Minifolds are used to simplify and centralise pressure instrumentation by allowing multiple pressure instruments or switches to connect through a single compact manifold block. This is especially useful in industrial settings where space is limited and reliable performance is essential.

"Minifolds" is HNL’s branded name for their aluminium manifold range, highlighting their compact, space-saving design. Functionally, they operate as traditional manifolds but with an emphasis on size efficiency and integration.

They are manufactured from high-quality aluminium. This ensures lightweight performance while maintaining excellent corrosion resistance and mechanical strength.

Yes, when paired with appropriate hazardous area-certified instrumentation, HNL Minifolds can be used in ATEX-rated or similarly classified environments. Always ensure the full system meets compliance standards.

Absolutely. They are designed to be compatible with a wide range of pressure switches, transmitters, and gauges commonly used in industrial process applications.

They are widely used across sectors such as food & beverage, chemical processing, pharmaceuticals, oil & gas, and general manufacturing. Their versatility makes them suitable for almost any pressure measurement application.

Yes, British Rototherm now owns the HNL brand, meaning these Minifolds can be sourced directly for improved lead times and guaranteed authenticity.

HNL Minifolds are available in a variety of configurations, including 2-port, 3-port, and 5-port designs, depending on the application needs. Custom setups may also be available upon request.

Yes, their compact and lightweight design makes installation straightforward, even in confined spaces. Maintenance is also minimal thanks to the corrosion-resistant aluminium construction.

Mounting accessories and brackets are typically available as optional extras. It’s always worth checking what’s included when ordering, especially if you're integrating into an existing system.

Pressure ratings vary by model, but they are generally engineered to handle standard industrial pressure ranges. For high-pressure applications, check the technical datasheets or consult the manufacturer.

Yes – we stock them here at Actuation Valve and offer same-day dispatch on popular models. For any specific requirements, feel free to contact our team for immediate availability and support.

FAQ

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