AST SP-55 single component drum pump for expansion joint filling

Close up of valve on AST SP-55 Drum Pump System

Hose wand for AST SP 55 Drum Pump System

Diagram of AST CMP Meter showing material inlet, pressure seal, pressure tube, piston rod, packings, guide, outer seal, lube port, and check valve.

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Single Component 55-Gallon Drum Pump for Firestop Materials (AST SP-55-FS)

Single Component 55-Gallon Drum Pump for Firestop Materials (AST SP-55-FS)

SKU: AST SP-55-FS

Made in the USA

Firestop Material

Firestop Installation
Sealing

Drum Pump for Firestop Materials and High-Volume Sealant Application

The AST SP-55-FS is a high-volume drum pump system built for dispensing firestop sealants and mortars directly from 55-gallon drums. Designed for demanding jobsites and large-scale firestop installation, it delivers consistent, high-pressure output for efficient application of UL-classified materials. With flow rates up to 2 gallons per minute and support for viscous or fiber-filled compounds, the SP-55-FS is ideal for crews handling large quantities of firestop product across multi-penetration or continuous sealant application scenarios.

Common firestop dispensing applications include:

Sealing wall and floor penetrations with UL-classified firestop sealants
Applying fire caulk or mortar in dynamic and static construction areas
Backfilling oversized annular spaces with pumpable firestop materials
Firestop installation in multi-zone, multi-penetration, or high-traffic facilities
Continuous firestop sealing with drum-based dispensing equipment

SP-55-FS Benefits for Firestop Pneumatic Pump Applications

Built for Bulk Firestop Materials: Drum pump system designed to dispense firestop sealants and mortars from 55-gallon drums.
High Output for Sealant Application: Dispenses up to 2 gallons per minute—ideal for extended runs and firestop work across multiple zones.
Handles Viscous and Fiber-Filled Compounds: Supports materials up to 1,000,000 CPS with pressures up to 3,000 psi.
Adjustable Flow Control: Choose between continuous flow or metered shot mode for precise application of fire caulk and firestop materials.
Heavy-Duty Pneumatic Construction: Built for rugged jobsites—trusted firestop pneumatic pump equipment.
Optional Pneumatic Elevator: Simplifies drum changeovers and supports continuous dispensing in high-volume operations.

Specifications

Volume Output: Up to 2 Gallons per Minute
Supply Type: 55-Gallon Drum
Pressure: Up to 3,000 psi
Viscosity Range: 1 to 1,000,000 CPS
Air Requirement: 10 CFM @ 100 PSI (clean, dry air)

Pumpable Firestop Materials

3M Fire Barrier Mortar
3M Fire Barrier Sealant 3000WT
3M Fire Barrier Sealant FD 150+
3M Firestop Fire-Barrier Caulk
Boss Products 814
GCP Perm-A-Barrier VPL
Hilti CP 606
Metacaulk 1200
Metacaulk MC 150+
Pecora AC-20 FTR
STI SpecSeal ES
STI SpecSeal LC Endothermic
STI SpecSeal LCI
STI SpecSeal Smoke N Sound
Tremco ExoAir 230
Tremco Tremstop Acrylic

These pumpable firestop materials are ideal for use with drum-based dispensing equipment. Contact us to confirm compatibility with your preferred product or fire caulk system.

Calculate Your Material Usage

Use the chart to estimate the linear feet of joint fill per gallon based on your joint width and depth.

Joint Fill Linear Feet Per Gallon Chart

Downloads

If your AST equipment is beyond repair, we want to help. If you meet the requirements, you can trade in your old machine and get $1,000 or more off a new piece of equipment like the SP 55, GMP 025, SP 5, or SOC 050.

Submit the form below to get the Technical Data Sheet (TDS) for AST SP 55 FS sent to your email address.

What firestop materials can the 55-gallon drum pump dispense?

This gallon pump for firestop materials is compatible with a wide range of materials, including Tremco ExoAir 230, Hilti CP 606, Metacaulk 1200, 3M Fire Barrier Mortar, Tremco Tremstop Acrylic, and much more. If you have questions about compatibility with a particular firestop material, just contact us.

What is the difference between the 5-gallon pail pump and the 55-gallon drum pump for firestop material dispensing?

The biggest difference between the pail pump and the drum pump is the volume. The 55-gallon drum pump is designed to dispense directly from 55-gallon drums and has a higher flow rate, so it is better suited for high-volume firestop material dispensing than the 5-gallon pail pump for firestop materials. Otherwise, the two firestop material dispensing systems are very similar.

Why should I choose this dispensing pump for firestop materials?

If you are looking for a high-volume joint pump for firestop materials, this system may be for you. It has a flow rate up to up to 2 gallons per minute and is compatible with materials up to 1,000,000 cps. It provides consistent material output and rugged reliability to simplify continuous dispensing in construction and commercial firestop applications.

Questions about AST SP 55 FS? Our team of adhesive specialists can help. Submit your questions and we'll get you answers right away.

Adhesive Systems Technology (AST) equipment is manufactured in Minnesota, USA and is part of APPLIED Adhesives Equipment Solutions. APPLIED is continuing its commitment to engineering and the development of adhesive dispensing systems and automation solutions for the industrial and construction markets.

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