7.3 Exercising Hose Connections & Pressure Restricting/Reducing Devices

7.3 Exercising Hose Connections Under Direct Supervision

The Level I content outline includes exercising hose connections under direct supervision. This is an operational task, not permission to conduct an unscheduled flow test or alter a pressure-regulating device. The supervising technician establishes the procedure, system coordination, discharge controls, and acceptance criteria.

Distinguish inspection from operation

NFPA 25 (2023) summary information lists hose-valve inspection quarterly. A visual inspection covers access, cabinet, handwheel, valve body, cap, threads or connection surface, leakage, corrosion, damage, signs, and any pressure-regulating or restricting device. Operational testing is a separate activity governed by the applicable hose-system provisions and the type of component.

Do not turn a valve during a visual inspection merely because the handwheel is present. Opening can release high-pressure water, transmit alarms, reduce system pressure, and create an unsafe discharge. Verify the work order and supervisor direction first.

Preparation

Identify the exact hose connection and system served. Review the prior record and note whether the outlet has a standard hose valve, pressure-restricting device, or pressure-reducing valve. Read markings and preserve seals. Determine whether the outlet is pressurized and where any test water will go. Confirm that drainage can control the volume without exposing occupants, electrical equipment, stairs, or exits.

Complete required notifications to the owner or representative, alarm monitoring personnel, and other affected parties. Establish communication between the operator and the person observing gauges or signals. Use required personal protective equipment and secure the area. A hose connection can release enough force to move unsecured equipment or injure a person.

Treat the cap as pressurized until the procedure establishes otherwise. Stand clear of its path, observe for leakage, and loosen it only as directed. Damaged threads, corrosion, or a missing chain can add risk. If water or pressure is unexpectedly trapped behind the cap, stop and inform the supervisor.

Controlled exercise

Use the proper handwheel or operating device. Move the valve smoothly through the assigned travel without extensions or excessive force. The purpose is to demonstrate operability and identify binding, leakage, damaged parts, or failure to reach the required position. If force rises unexpectedly, the stem or handwheel deforms, packing leaks substantially, or discharge cannot be controlled, stop rather than forcing the component.

Pressure-reducing valves and pressure-restricting devices require particular care. Their settings affect outlet pressure and may be sealed or otherwise controlled. A Level I technician records the device identity, visible setting or marking, seal condition, and test observations but does not change the setting. Required pressure tests and adjustments must follow the applicable procedure under qualified direction.

If the assignment includes flow, open only to the position and rate directed, monitor the discharge, and record the required gauge values or observations. Do not use a guessed duration or universal flow criterion. The system type, device, and test purpose determine the procedure.

Restoration

Close the valve in a controlled manner to avoid pressure surge. Confirm that flow stops and observe for leakage past the seat or around the stem. Restore the cap and chain or retaining device, cabinet, locks, and signs. Verify that any alarm or supervisory condition clears and that related control valves remain in the correct normal position.

Never leave a valve partially open to avoid a tight handwheel. The correct final position comes from the approved procedure and component instructions. Likewise, do not apply a blanket quarter-turn back-off rule to a hose valve or pressure device.

Documentation

Record the connection identifier, exact location, device type, make/model or markings when required, initial condition, supervised operation performed, range of movement, leakage, abnormal resistance, flow or pressure observations, and final restored condition. Identify the supervising technician and notifications when the form requires them.

If the valve cannot be operated or restored, or if the condition affects system availability, notify the supervisor immediately and follow the impairment process. Describe facts rather than assigning a consequence without context. “Hose valve HV-4 at Stair B, Level 6 could not be moved with normal operating force; work stopped and supervisor notified” is actionable and preserves the observation.

Exam focus

Hose work combines pressure exposure with a component that responders may need. Protect the setting of pressure-regulating equipment, use a controlled discharge, stop for abnormal resistance, and record the final valve, cap, cabinet, and signal condition rather than treating handwheel movement as the whole task.

Supervised hose-valve sequence

• Identify pressure, device type, discharge route, and notifications.
• Operate smoothly without changing a regulating or restricting setting.
• Restore valve, cap, cabinet, signals, and system status and record the result.