Neometrix / Hydraulic Rescue Tool Power Units / Hydraulic Rescue Tool Power Unit / NMX-RTP-54

NMX-RTP-54 · ENGINEERED-TO-ORDER CLASS — SPECIFY · POWER · CONTROL · CONNECT · START · PROVE

Hydraulic Rescue Tool Power Unit. Soon at work, safely let go.

Name: Hydraulic Rescue Tool Power Unit
SKU: NMX-RTP-54

A rescue tool is only as good as the unit behind it. The unit has to start when it is needed, reach the work quickly, and let go safely.

So the unit is built around three things: a staged pump that gives flow first and force last, a dead-man control that stops the tool the moment the hand lets go, and a relief valve set to protect the hose and the tool.

Discuss a rescue power unit Capability note (PDF)

A single portable petrol-engine hydraulic power unit in a clean test hall: a tubular grey steel carrying frame with two side handles holding a small plain petrol engine with a recoil start, a hydraulic pump block, a grey oil reservoir and a grey fuel container, with two plain black hoses and stainless dry-break couplers coiled on the floor beside it, and no people

Fig · 01 — A portable petrol-engine hydraulic power unit in its carrying frame, with its twin hoses and couplers coiled beside it — illustrative render.

The pump

staged: flow, then forcefast to the work

The control

dead-man handlerelease stops the tool

The relief

set and showncaps the pressure

The start

cold-start testedwith the real tools

Status

engineered to orderno unit yet delivered

ISO 9001ISO 14001EN 13204 rescue tool system referenceISO 7241 coupling reference

Overview

Why a power unit is judged by how soon it is at work, and how safely it lets go.

Because a rescue is decided in minutes, and a hose under pressure is dangerous. A unit that is strong but slow wastes the time, and one that cannot let go safely adds a second hazard.

Fig · 02 — The unit in one picture: the engine starts and runs, the pump gives flow and then force, and the handle drives, stops and holds.

Soon at work, safely let go.

What the unit is for

It powers hydraulic rescue tools: the spreaders, cutters and rams that fire and rescue services use to open, cut and prop structures after an accident. A petrol engine drives a pump, and two hoses carry the oil to the tool and back. The unit is carried to the work, so it has to run away from mains power.

Why the pump is staged

A pump makes flow, and pressure is what the load builds against it. The tool moves at the speed of the flow. A staged pump gives high flow at low pressure to bring the tool to the work, then trades flow for pressure, in steps, as the load comes on. A single stage sized for full force would be slow all the way.

Why the control is dead-man

The handle drives the tool one way or the other. A dead-man function returns it to neutral the moment it is released, so the tool stops, and non-return valves hold the load where it is. Nobody should have to chase a tool that keeps moving.

Why the relief is set and shown

The relief valve caps the pressure the load can build. Set too high, it lets the hose, the couplers and the tool take more than they should. Set too low, the tool stalls short of the force the job needs. So the setting is made, then shown on the real tools before handover.

Why the start is tested cold

A petrol engine that starts on the bench may not start in the cold, or after a season on the shelf. The unit is start-tested the way it will be used, with the real tools on the hoses. It is meant to run in the open, because petrol exhaust is harmful in a confined space.

Why hoses and couplers matter

Two hoses and two dry-break couplers make the circuit, and a hose that fails under pressure can whip. Couplers that follow a public standard let tools and units be matched, and restraints on the hoses keep a failure from becoming an injury.

The method

Specify, power, control, connect, start, and prove.

Six steps in a fixed order. The two shaded steps are the ones a quick order skips.

FIG · 02HYDRAULIC RESCUE TOOL POWER UNIT · SPECIFY / POWER / CONTROL / CONNECT / START / PROVE — SOON AT WORK, SAFELY LET GO

The step people underrate is the release. A unit that drives hard and cannot stop cleanly has solved only half of the problem.

Fig · 03 — Three ways a power unit lets you down: a slow approach, no dead-man, and a wrong relief — a drawing of the idea, with no values.

1 · Specify

The tools set the flow and the pressure, and the work sets the reach and the weather. The customer states them, and the unit does not guess them.

2 · Power

The engine and the staged pump are sized to the tools the unit will drive, with flow for the approach and force for the work.

3 · Control

A dead-man handle and a relief valve are fitted and set. Release stops the tool, the load is held, and the pressure is capped.

4 · Connect

Twin hoses with dry-break couplers are fitted, with restraints, and the hoses are long enough to work from the open.

5 · Start

The unit is cold-started and run with no load and then with the real tools, and the speed of the tool is checked.

6 · Prove

Relief and release are shown on the tools, and the record is handed over with the unit.

Work content

What the unit contains, element by element.

Read it as a checklist: a unit missing a row will start well and fail at the scene.

A single hydraulic rescue spreader tool on a grey steel bench: a compact black body with a black grip handle and two dark grey steel arms with tapered tips opened slightly apart, and two plain black hoses with stainless dry-break couplers curving away from its rear, and no people

Fig · 04 — The tool end: a rescue spreader with its twin hoses and dry-break couplers — illustrative render.

Element	What it does	What matters
Petrol engine	drives the pump	a four-stroke engine sized for the pump, with a simple recoil start, built for a cold start in the open
Staged pump	gives flow, then force	high flow at low pressure for the approach, then force in steps as the load comes on
Reservoir & filter	store and clean the oil	a reservoir sized for the tools and the hoses, and a filter that keeps dirt out of the valves
Dead-man handle	drives, stops and holds	a handle that returns to neutral when released, so the tool stops and the load is held
Relief valve	caps the pressure	set to protect the hose, the couplers and the tool, and shown on the tools
Hoses	carry the oil	twin hoses long enough to work from the open, with restraints that stop a failed hose from whipping
Couplers	join tool and unit	dry-break couplers that follow a public standard, so tools and units can be matched
Frame	carries the unit	a tubular frame with carrying handles that protects the engine and the pump and suits the people who carry it
Fuel container	holds the petrol	a container with a secure cap and a spill-safe fill, kept clear of the hot engine
Tools	do the work	a spreader, a cutter and a ram matched to the flow and pressure of the unit and tested with it
Guarding	keeps people clear of hot and moving parts	a shielded exhaust, a guarded recoil and a stop switch within reach
Procedure	fixes the sequence	specify, power, control, connect, start and prove, the same for every unit
Testing & documentation	prove the unit first	a cold-start test, a relief and release test and a record the customer can inspect

The element that decides whether the unit is safe is the dead-man handle and the relief valve, because a unit that cannot stop the tool or cap the pressure is a second hazard at the scene.

Fig · 05 — One unit, three tools: a spreader, a cutter and a ram, each driven by the same engine, pump and hoses.

Full specification — expand

System	A petrol engine with a recoil start, built for a cold start in the open; a staged hydraulic pump; a reservoir and filter; a double-acting control with a dead-man handle and load-holding non-return valves; a relief valve set and shown on the tools; twin hoses with dry-break couplers and hose restraints; a tubular carrying frame; a fuel container with a secure cap; matched spreader, cutter and ram tools where supplied; a shielded exhaust, a guarded recoil and a stop switch; a written duty plan; and testing and documentation before handover
The One Idea	A hydraulic rescue tool power unit is judged by how soon it is at work and how safely it lets go.
Why The Pump Is Staged	A pump makes flow and the load builds pressure against it, the tool moves at the speed of the flow, so a staged pump gives high flow at low pressure to bring the tool to the work and then trades flow for pressure in steps as the load comes on, where a single stage sized for full force would be slow all the way
Why The Control Is Dead-Man	A dead-man function returns the handle to neutral the moment it is released, so the tool stops and non-return valves hold the load where it is, instead of a handle that stays where it was put and a tool that keeps running
Why The Relief Is Set And Shown	The relief valve caps the pressure the load can build, so set too high it lets the hose, couplers and tool take more than they should and set too low it stalls the tool short of the force the job needs, which is why the setting is made and then shown on the real tools
Why The Start Is Tested Cold	A petrol engine that starts on the bench may not start in the cold or after standing for a season, so the unit is start-tested the way it will be used, with the real tools on the hoses, and it is meant to run in the open because petrol exhaust is harmful in a confined space
Why Hoses And Couplers Matter	Two hoses and two dry-break couplers make the circuit, a hose that fails under pressure can whip, couplers that follow a public standard let tools and units be matched, and restraints on the hoses keep a failure from becoming an injury
Standards	EN 13204 is the public safety and performance standard for double-acting hydraulic rescue tool systems for fire and rescue services, which treats a system as a separate power pack, the tools and the hoses between them, and its current edition should be checked. ISO 7241 is the public reference for dry-break quick-action couplings. This page prints none of their requirements. Approval of a unit for use rests with the customer and the authority they name; none is claimed here
Configurations	A power unit only for tools the customer already owns, a unit and hoses with couplers and hose restraints, and a full rescue set with the unit, hoses and a matched spreader, cutter and ram tested together
Scope Boundary	This page is the power unit. The spreader tool has its own page (see hydraulic spreader), a large power-pack skid for machinery has its own (see hydraulic power pack and actuator system) and breathing air and rescue apparatus has its own (see breathing air systems and rescue sets). It is not a medical product: no certification is claimed here
Status	Neometrix has quoted against successive hydraulic rescue tool power unit requirements, and no delivered hydraulic rescue tool power unit is claimed.

Configurations

One method, three ways to supply the unit.

The method, the record and the release rule are shared. What changes is how much of the rescue set is supplied.

Power unit only

Engine, pump and handle valve

A portable petrol unit for the rescue tools the customer already owns, matched to their flow and pressure.

Unit and hoses

Unit, hoses and couplers

The unit with twin hoses, dry-break couplers and hose restraints, ready to connect to the customer's tools.

Full rescue set

Unit, hoses and tools

The unit, the hoses and a matched spreader, cutter and ram, tested together before handover.

Fig · 06 — Three ways to supply the unit, one method: a power unit only, a unit with hoses, or a full rescue set.

And the part that is not equipment at all, yet decides all three: the duty plan. It fixes the tools, the reach, the weather and the carry, and it is written from the rescue work, not from the unit.

Where it is used

Wherever steel has to be opened, cut or propped, away from a mains socket.

The common thread is a team that carries its power with it and has to trust it the first time.

Fire and rescue services

Where structures have to be opened, cut and propped after an accident, and the team carries its own power.

Industrial and plant rescue

Where a works or a site keeps its own rescue team and its own kit, ready for equipment that traps people.

Rail and road accident sites

Where steel and heavy sections have to be spread or cut, with the unit set up in the open at the scene.

Station and site teams

Where a unit stands ready for years, and must start when it is finally needed.

Watch

See it in motion.

A short walkthrough video of the hydraulic rescue tool power unit.

FAQ

Common questions.

Longer answers, for readers who want the reasoning.

Q · 01 How does a hydraulic rescue tool power unit work?

A petrol engine drives a hydraulic pump. The pump pushes oil through one hose to the tool, and the oil returns through a second hose to the reservoir. The tool moves at the speed of the flow, and its force comes from the pressure the load builds against the pump. A control handle sends the oil to open or close the tool, and a relief valve caps the pressure. When the handle is at neutral the oil simply circulates back to the reservoir, so the unit can idle ready without driving the tool.

Q · 02 Why is the pump staged?

A pump makes flow, and pressure is what the load builds against it. The speed of the tool follows the flow, so a pump sized for full force alone would move the tool slowly all the way to the work. A staged pump gives high flow at low pressure to bring the tool to the work, then trades flow for pressure in steps as the load comes on, ending at the relief valve. Some units have two stages and some have three, so the stage count is taken from the unit's own data and this page claims none.

Q · 03 What does the dead-man control do?

It returns the handle to neutral when it is released, so the tool stops at once. Non-return valves then hold the load where it is, so a spread or a prop does not creep back. Without that function a handle stays where it was put, and the tool keeps running until someone reaches it. The person on the tool is the person who must be able to stop it, so the stop belongs in the operator's hand, not at the engine.

Q · 04 Is this the same as the hydraulic spreader, power pack or breathing air pages?

No, and the differences are worth stating precisely. The hydraulic spreader page is a spreader tool for rescue and industrial work. The hydraulic power pack and actuator system page is a large power-pack skid for machinery and actuators. The breathing air systems and rescue sets page is air for people. This page is the portable petrol unit that drives rescue tools. It does not replace any of them, and it does not claim what they claim a second time.

Q · 05 What can the unit not do?

It supplies flow and pressure, and it does not choose the tool: the limits of the tool decide what it can cut or spread. It is not made to run indoors or in a confined space, because petrol exhaust is harmful there. It does not certify a tool or itself: this page claims no certification or accreditation. No pressure, flow or force figure is printed here, and approval of a unit for use rests with the customer and the authority they name; none is claimed here.

Q · 06 Has Neometrix built one of these?

We would rather answer this plainly than let a page imply otherwise. Neometrix has quoted against successive hydraulic rescue tool power unit requirements, and no delivered hydraulic rescue tool power unit is claimed. What stands behind the offer is adjacent: Neometrix offers a hydraulic rescue spreader (see the hydraulic spreader page) and engineers hydraulic power packs (see the hydraulic power pack and actuator system page). The engine, pump, valves, hoses and couplers are catalogue items, bought in, not invented. What Neometrix engineers is the unit around them: the frame, the control and the relief setting, the hose set and its restraints, the start test, the procedure and the records. So the honest position is that the unit is engineered to order, the neighbouring disciplines are in the building, and the first unit of this exact kind will be built around the customer's own tools rather than taken off a shelf.

Q · 07 Which standards apply, and who approves the unit?

EN 13204 is the public safety and performance standard for double-acting hydraulic rescue tool systems for fire and rescue services. It treats a system as a separate power pack, the tools and the hoses between them, and its current edition should be checked by the reader. ISO 7241 is the public reference for dry-break quick-action couplings. This page prints none of their requirements. Acceptance of the finished unit, including its proving runs before handover, rests with the customer and whatever authority they name.

Q · 08 What do you need from us to quote?

Six things, and most of them describe your tools and your work rather than the unit. First, the tools: what is to be driven, with the flow and pressure each needs, stated by the customer. Second, the duty: the reach, the weather and who carries the unit. Third, the hoses and couplers: the lengths and the coupler type on your tools. Fourth, the control and guarding: the handle, the stop and the site's rules. Fifth, the tests: the cold-start and the relief and release tests you want shown. Sixth, the record: what you want kept with the unit. From that we come back with a unit concept, a written duty plan you can check, and a budgetary price.

The neighbouring hydraulic pages, and how they differ from this one.

Three neighbours: one is the tool, one is a large skid, one is air for people.

↗ A rescue tool

Hydraulic Spreader

A hydraulic spreader for rescue and industrial work - the tool at the end of the hoses, not the unit that drives it.

↗ A large skid

Hydraulic Power Pack and Actuator System

A large power-pack skid for machinery and actuators - a fixed installation, not a portable petrol unit.

↗ Air for people

Breathing Air Systems & Rescue Sets

Breathing air and apparatus for people - air to breathe, not oil to drive a tool.

Browse all Neometrix product lines.

Get a quotation

Tell us the tools, the reach,
and the weather.

The projects desk replies within two working days with a unit concept, a written duty plan you can check, and a budgetary quotation. Write to [email protected] or use the form.

Enquire — rescue tool power unit Capability sheet (PDF) +91 7777 876 876

ISO 9001 / 14001 ENGINEERED-TO-ORDER CLASS — HYDRAULIC RESCUE TOOL POWER UNIT SPECIFY · POWER · CONTROL · CONNECT · START · PROVE — SOON AT WORK, SAFELY LET GO ENGINEERED IN NOIDA · INDIA