Multi Rotation Lock (MRL)

Product catalog summary

Overview
The Multi Rotation Lock (MRL) is designed for hand wheel-operated valves such as gate, globe, and gearbox-operated valves. It can be installed without altering the host valve, maintaining the valve's original characteristics. The MRL replaces the original hand-wheel with a stainless steel one of the same size.

Specifications

Constructed entirely from stainless steel AISI 316.
Features a robust, reliable, and simple design with minimal parts.
Maintenance-free and does not require grease.
Can be mounted without plant shutdown or valve modification.
Resistant to environmental factors like sand, dirt, snow, and ice.
Tested for extreme operating environments.
Includes a tamperproof mechanism with a secondary safety feature.

Features

Stainless steel 316 handwheel and body, 5mm thick.
Linear key for user-friendly operation.
Key slots protected with self-sealing weather strips.
Easy to set and reset counters.
Simple and reliable anti-manipulation clutch.
Eight screws for a strong fit.
Large diameter adapter with four keyways, ensuring the original nut fits and minimizing load on keys.

Certifications

ISO 9001-2000 Certified.
SCC Certified.
Locks are TUV & ATEX certified.

Key Interlocking Principle
The MRL uses a mechanical key interlocking system with two keys: one for the locked open position and one for the locked closed position. The open key is released when the valve is open, allowing operation of the next lock in sequence. Each key is unique, and NETHERLOCKS determines the codes to ensure the required sequence.

Catalog excerpts

Process Interlocking Multi Rotation Lock (MRL) The Multi Rotation Lock (type MRL) is suitable for all hand wheel-operated valves like gate-, globe- and gearbox-operated valves. The MRL can be mounted without any alteration to the host valve, and the characteristics of the valve remain unchanged. The lock is installed as an integral part of the valve, with the original hand-wheel removed and replaced with a new, samesized Stainless Steel hand wheel. Since the number of rotations to open or close a valve is different for almost every valve, the MRL has a field adjustable, easy to set counting mechanism. The principle of mechanical key interlocking is the transfer of keys. Each lock is executed with two keys: one for the locked open position and one for the locked closed position. When the valve is open the “open” key is released, can be removed ready to operate the next lock in the sequence, which will share the same code. All keys are unique and depending on the sequence NETHERLOCKS will determine the codes to guarantee the required sequence. Technical specifications: o Fully made of stainless steel AISI 316 o Stainless steel hand wheel is provided in the same size as the original o Robust, reliable and simple design with a minimal amount of parts o Maintenance free, no Grease o Mounting can be done without shutting down the plant or making modifications to the valve o Invulnerable for sand, dirt, snow, ice, etc. o Thoroughly tested to withstand the most extreme operating environments o Tamperproof; integrated second safety to prevent unlocking with an unauthorized object other than the designated linear key

Open the catalog to page 1

Process Interlocking Multi Rotation Lock (MRL) Features Stainless steel 316 handwheel Linear key for operator friendly use. Key slots protected with self sealing weather strips Stainless steel 316 body, 5mm thick. Easy to set and reset counters Minimum of strong stainless steel 316 components Simple and reliable anti manipulation clutch 8 screws to install the lock for a very strong fit. Stainless steel 316 purpose machined bracket. Due to large adapter diameter always the original nut can be used for permanent reliability. Large diameter adapter – purpose machined - with 4 keyways. The large...

Open the catalog to page 2

Multi Rotation Lock (MRL)

Multi Rotation Lock (MRL)

Catalog excerpts

All Netherlocks catalogs and technical brochures