Brass tray nut counter

Secure the fastening and sealing of your installations with the Brass Plate Locknut (Ref. 1609). This technical accessory is specifically designed to offer a superior bearing surface thanks to its enlarged base (the plate), enabling clamping pressure to be distributed evenly. It's the essential solution for locking fittings onto long threads, or for holding a grommet firmly against a tank or bulkhead.

Sanitary compliance and 4MS brass technology

The safety of your drinking water networks is at the heart of the design of this fitting, which meets the most recent regulatory requirements:

• Brass CW617N-4MS: Use of a high-quality alloy compliant with the European "4MS" approach, guaranteeing controlled lead content to preserve water purity.
• Eau Potable certification: This fitting complies with the decree of June 25, 2020, validating its safe use in water distribution systems intended for human consumption.
• Manufacturing excellence: The result of precision forging and machining, this locknut offers clean threads and a robust structure capable of withstanding high mechanical stress.

Technical performance and sealing by enlarged plate

Ref. 1609 features technical characteristics optimized for pressurized environments:

• Nominal pressure 16 Bar: Certified PN 16, it ensures powerful locking even under high hydraulic pressure constraints.
• Wide, flat gasket range: The plate offers a generous bearing surface, ideal for compressing flat gaskets (thickness from 1mm) and guaranteeing a perfect seal, even on slightly irregular walls.
• ISO 228-1 standard: Tapping follows the BSPP (Gas Series) standard, ensuring universal compatibility with your nipples, valves and wall penetrations.

Simplified installation and versatility of use

Easy installation thanks to hexagonal retaining plates adapted to standard wrenches on the market. Its structure allows a wide temperature range (-20°C to +120°C depending on the type of seal chosen), making it suitable for use on both cold water and heating systems. Its primary function is to "counter" a male thread to prevent accidental loosening due to vibration or thermal shock.

Case studies: fixing tanks and stabilizing valves

In the case of a concrete installation on a water recovery tank, this locknut allows a wall feed-through to be clamped hermetically against the plastic wall. For example, by inserting a gasket between the plate and the tank, you obtain a leak-free connection. It's also ideal for stabilizing a valve on a long threaded manifold, allowing the control handle to be perfectly oriented while ensuring a definitive mechanical lock.

Technical features