Reverse Action Medium Velocity Fixed Spray Nozzle

The EMACO Reverse Action Medium Velocity Fixed Spray Nozzle is an open reverse-action spray nozzle for directional cooling of vertical, horizontal, curved and irregular equipment surfaces in fixed deluge systems.

Engineering overview

Used within a fire-protection system, the EMACO Reverse Action Medium Velocity Fixed Spray Nozzle functions as a directional open nozzle arranged to apply medium-velocity spray back toward exposed equipment surfaces. Choose K-factor, spray angle, material and strainer option from the surface geometry, required density, operating pressure and corrosion conditions. Its reverse-action deflector supports coverage of shapes that are difficult to protect with a conventional forward spray. EMACO lists versions in brass, brass with copper strainer, stainless steel and aluminum bronze. Orient each nozzle according to the approved spray-layout drawing and connect it to deluge piping that has been hydraulically balanced for simultaneous discharge. Before purchase, lock down the model, approval status, material, rating, connection details and supplied accessories. The installed assembly must follow the approved drawings, product data and governing fire-protection standard.

Technical Q&A

How should the EMACO Reverse Action Medium Velocity Fixed Spray Nozzle be sized or selected?

Begin with the required flow, pressure, connection and service conditions. Choose K-factor, spray angle, material and strainer option from the surface geometry, required density, operating pressure and corrosion conditions.

How should the EMACO Reverse Action Medium Velocity Fixed Spray Nozzle be arranged in the system?

The system arrangement controls this. Orient each nozzle according to the approved spray-layout drawing and connect it to deluge piping that has been hydraulically balanced for simultaneous discharge.

What should procurement verify for the EMACO Reverse Action Medium Velocity Fixed Spray Nozzle?

Confirm the technical schedule before placing the order. Confirm model, K-factor, spray angle, material, integral strainer requirement, 15 mm connection, pressure rating and approval.

Technical specifications

Specification	Product information
Models	EM CB; EM CBS; EM C, EM CS; EM CE
Size / capacity	Refer to model documentation.
Working pressure	WORKING PRESSURE: 175psi (12bar)
Connections	END CONNECTION: ½” (15mm) BSPT
Materials / finish	MATERIAL: Brass; Brass with Copper Strainer; Stainless Steel; Aluminum Bronze; FINISH: Natural Brass finish, Chrome plated brass, Electroless Nickel plated, Epoxy coated; Natural finish
Documented standards	APPROVAL: UL

Resources & documents

Access available datasheets and certificates through the protected resources portal. For model-specific submittals, send your project requirements to our technical team.

Model details