TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

IN-LINE INDUCTOR [3 records]

Record 1 2016-12-07

English

Subject field(s)
  • Fire-Fighting and Rescue Equipment
  • Extinguishing Agents
DEF

Device in which the foam compound is added to the water and which can be fitted at any point in the delivery hose.

DEF

Equipment designed to induce foam concentrate into a water stream, usually positioned between the pump and the branch pipe. [Definition standardized by ISO.]

CONT

in-line inductor : This type of proportioner educts or drafts foam concentrate from a container or tank by venturi action, utilizing the operating pressure of the hose water stream on which it is installed, injecting concentrate into that flow of water.

CONT

There are three different types of foam proportioners commonly used in the fire service: line eductors, balanced pressure proportioners, and around-the-pump proportioners. The line eductor is the simplest and least expensive proportioning device. It has no moving parts in the water way, which makes it durable and dependable. The line eductor may be attached to the hoseline or may be part of the nozzle. There are two different types of line eductors: the in-line eductor and the self-educting nozzle. Both types of eductors use the venturi principle to draft foam concentrate into the water stream. As water at high pressure passes over a reduced opening, it creates a low-pressure area near the outlet side of the eductor. This low-pressure area creates a suction effect. The eductor pickup tube is connected to the eductor at this low-pressure point. The pickup tube submerged in the foam concentrate draws concentrate into the water stream, creating a foam water solution.

OBS

foam inductor: A piece of equipment that introduces the proper quantity of foaming agent into a water stream.

OBS

in-line: Referring to a device or fitting inserted in series with (or parallel to the flow in) a hose line.

OBS

in-line foam concentrate inducer: term standardized by ISO.

Key term(s)
  • inline eductor
  • inline foam eductor
  • inline proportioner
  • inline foam proportioner
  • inline foam inductor

French

Domaine(s)
  • Matériel de secours et de lutte (incendies)
  • Agents extincteurs
DEF

Appareil intercalé dans l'établissement des tuyaux de refoulement, dans lequel s'opère le mélange du produit émulsifiant et de l'eau d'extinction.

DEF

Équipement conçu pour injecter l'émulseur dans l'eau, généralement placé entre la pompe et l'applicateur. [Définition normalisée par l'ISO.]

OBS

injecteur d'émulseur en ligne : terme normalisé par l'ISO.

Spanish

Campo(s) temático(s)
  • Equipo de salvamento y lucha contra incendios
  • Agentes extintores
Save record 1

Record 2 2010-07-27

English

Subject field(s)
  • Fire-Fighting and Rescue Equipment
  • Extinguishing Agents
CONT

Around-the-pump proportioner : This type of proportioner also operates on the venturi principle [as does the "in-line inductor"], except that it must be situated at the pump and connected to both suction and pressure sides. Its advantage is that pressure recovery of the venturi action is attained, and pump delivery pressures to the foam-making device or devices downstream require no compensation for pressure loss except for that in the layout hose length.... A small portion of the pump discharge flows through a bypass line to the suction side of the pump. A venturi eductor in this line produces a negative pressure on the foam concentrate pickup line from the foam concentrate container. Foam concentrate is led to the eductor where it mixes with water and is delivered to the suction side of the pump.

Key term(s)
  • foam concentrate pickup tube
  • foam concentrate pick-up line
  • eductor pick-up tube

French

Domaine(s)
  • Matériel de secours et de lutte (incendies)
  • Agents extincteurs
OBS

tube plongeur : proposition confirmée par le Centre de secours de l'Association nationale des sapeurs pompiers volontaires, en France.

Spanish

Save record 2

Record 3 2002-03-08

English

Subject field(s)
  • Fire-Fighting and Rescue Equipment
  • Extinguishing Agents
DEF

A type of liquid foam concentrate proportioning device that feeds the concentrate into the water at the output side of the pump rather than through the pump.

CONT

Balanced-pressure proportioners and around-the-pump proportioners are both systems that are built into the apparatus fire pump. ... The around-the-pump proportioning system consists of a pickup line on the discharge side of the pump back to the intake side of the pump. An in-line eductor is positioned on this pump bypass. These units are rated for a specific flow and should be used at this rate, although they do have some flexibility. For example, a unit designed to flow 500 gpm (2,000 L/min) at a 6 percent concentration will flow 1,000 gpm (4,000 L/min) at a 3 percent rate.

CONT

Around-the-pump proportioner : This type of proportioner also operates on the venturi principle [as does the "in-line inductor"], except that it must be situated at the pump and connected to both suction and pressure sides. Its advantage is that pressure recovery of the venturi action is attained, and pump delivery pressures to the foam-making device or devices downstream require no compensation for pressure loss except for that in the layout hose length.... A small portion of the pump discharge flows through a bypass line to the suction side of the pump. A venturi eductor in this line produces a negative pressure on the foam concentrate pickup line from the foam concentrate container. Foam concentrate is led to the eductor where it mixes with water and is delivered to the suction side of the pump.

Key term(s)
  • around the pump proportioner
  • around the pump inductor
  • around the pump proportioning system

French

Domaine(s)
  • Matériel de secours et de lutte (incendies)
  • Agents extincteurs

Spanish

Save record 3

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