Smith Flow Control and Netherlocks have merged. We are now Sofis.

Products

We offer three product groups, with each group consisting of a broad range of complementary products designed to help you run your plant as efficiently and safely as possible.

Process Safety

Valve interlocks on pressure safety valves

Smith Valve Interlocks

The Smith range of interlocks guarantee your operators follow a process from start to finish, eliminating the risk of human error. They are available as quarter-turn (QL for lever operated valves) or multi-turn (GL for wheel operated valves).

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Netherlocks Valve interlock on multi rotation valve

Netherlocks Valve Interlocks

The Netherlocks range of interlocks guarantee your operators follow a process from start to finish, eliminating the risk of human error. They are available as quarter-turn (NDL for lever operated valves) or multi-turn (MRL for wheel operated valves).

Go to Netherlocks Valve Interlocks
key management device for valve interlocks

Key Management

Avoid time taken searching for missing keys or taking the wrong one in to the field. Integrate digital information from across your plant.

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Control system for safe valve operations

Sequence Control

When you’re safeguarding complex processes with valve interlocks, you need sequence control products to ensure you operate valves in the correct order. These devices provide additional sequence guidance in the field.

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Drive Systems

Power Wrench portable valve actuator

Power Wrench Portable Actuator

Speed up valve operation and improve efficiency of your manually operated valves. The Power Wrench is perfect for incidental manual valve operations.

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EasiDrive Portable Actuator

Quickly operate time-consuming, hard to operate valves without expensive actuators. Simply install low-cost, permanent, dedicated, mounting kits on to your valves.

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FlexiDrive remote valve operator

FlexiDrive Remote Operator

Safe operation of your hard to reach valves. By positioning an operator station away from your valves, you can work valves that are above, below, immersed or in tight and confined spaces.

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Valve Monitoring

Valve position indicator for gate and globe valves

VPI Position Indicator

VPI is a high-performance switch box for manual multiturn valves. It detects when valves have reached their open or closed position and sends a signal to your DCS.

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Partial stroke test device reveals hidden ESD failures

FAITH Partial Stroke

The FAITH is a bracket and drive bush with testing capabilities. In test mode, FAITH partial stroke mechanically blocks valve movement for a safe test with reliable results.

Go to FAITH Partial Stroke