Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

ALLEGRO Ambient Air Pump: 0 to 10 cfm, 0 to 15 psi, 3/4 hp Horsepower, Industrial Interchange - Allegro SAR Compressors & Ambient Air Pumps
ALLEGROAllegro SAR Compressors & Ambient Air Pumps

ALLEGRO Ambient Air Pump: 0 to 10 cfm, 0 to 15 psi, 3/4 hp Horsepower, Industrial Interchange

The Allegro 9821 Ambient Air Pump (SKU 8TMF4) is a 3/4 hp SAR compressor delivering 0 to 10 cfm airflow at 0 to 15 psi operating pressure, fitted with Industrial Interchange connections. 3G Electric interprets demand…

SKU 3G-OTH-691948

Brand
ALLEGRO
Item
Ambient Air Pump: 0 to 10 cfm, 0 to 15 psi, 3/4 hp Horsepower, Industrial Interchange
Category
Allegro SAR Compressors & Ambient Air Pumps
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

ALLEGRO
Manufacturer Part Number
9821 IND. INTERCHANG
Type
0 to 15 psi, Industrial Interchange, Allegro 9821
Air Flow
0 to 10 cfm
Fittings
Industrial Interchange
Horsepower
3/4 hp
Brand and Series
Allegro 9821
Operating Pressure
0 to 15 psi
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

ALLEGRO Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The Allegro 9821 Ambient Air Pump (SKU 8TMF4) is a 3/4 hp SAR compressor delivering 0 to 10 cfm airflow at 0 to 15 psi operating pressure, fitted with Industrial Interchange connections. 3G Electric interprets demand for this OEM-specified pump across 14 industrial departments — and we supply far more than is listed — with specialist depth in combustion, pumps and controls as an authorised distributor for brands including Allegro, ensuring the right answer for your application.

Frequently Asked Questions

What is the Allegro 9821 ambient air pump used for?

The Allegro 9821 ambient air pump supplies breathable air for supplied-air respirator (SAR) systems in industrial environments. It delivers 0 to 10 cfm at 0 to 15 psi, making it suitable for painting, chemical handling, and confined-space work where clean air is required.

What are the specifications of the Allegro 9821 ambient air pump?

The Allegro 9821 ambient air pump has a 3/4 hp motor, delivers 0 to 10 cfm airflow, operates at 0 to 15 psi, and uses Industrial Interchange fittings. It is part of the Allegro 9821 series and is designed for SAR compressor applications.

Where to buy the Allegro 9821 ambient air pump worldwide?

3G Electric supplies the Allegro 9821 ambient air pump worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your site. Contact us for pricing and lead time on this OEM-specified pump.

How to install the Allegro 9821 ambient air pump?

Install the Allegro 9821 ambient air pump in a clean, ventilated area away from contaminants. Connect the Industrial Interchange fittings to your SAR system, ensure the 3/4 hp motor is wired per local codes, and verify 0 to 15 psi operating pressure before use. Follow the manufacturer's manual for safety.

Used in

Common applications for ALLEGRO
Industrial hygiene monitoring — ALLEGRO lead cassettes (9804-14) for airborne lead sampling in manufacturing facilities.
Confined space ventilation — ALLEGRO axial blower (9548) for air movement in tanks or vaults during maintenance.
Temporary heating on construction sites — ALLEGRO portable electric heater (9401-50) for work tents in cold weather.
Sampling pump maintenance — ALLEGRO service kits (9804-40) for replacing vanes and filters in IAQ pumps.
Asbestos or particulate analysis — ALLEGRO TEM cassettes (9804-17) for electron microscopy sample collection.
HVACR system testing — ALLEGRO axial blower (9548) for ventilation testing in ductwork or equipment rooms.

ALLEGRO Products

3G Electric supplies ALLEGRO allegro sar compressors & ambient air pumps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Pump Accessories Valves & Regulation Motors & Drives All Products

More from ALLEGRO

View all ALLEGRO parts
Ambient Air Pump: 0 to 20 cfm, 0 to 15 psi, 1 1/2 hp Horsepower, OBAC, Allegro 9832, 3 Respirators (MPN 9832 OBAC). Key specifications — Air Flow: 0 to 20 cfm; Operating Pressure: 0 to 15 psi; Fittings: OBAC; Brand and Series: Allegro 9832.
ALLEGRO
Ambient Air Pump: 0 to 20 cfm, 0 to 15 psi, 1 1/2 hp Horsepower, OBAC, Allegro 9832, 3 Respirators (MPN 9832 OBAC). Key specifications — Air Flow: 0 to 20 cfm; Operating Pressure: 0 to 15 psi; Fittings: OBAC; Brand and Series: Allegro 9832.
Ambient Air Pump: 0 to 5 cfm, 0 to 15 psi, 1/4 hp Horsepower, OBAC, Allegro 9806, 1 Respirators (MPN 9806 OBAC). Key specifications — Air Flow: 0 to 5 cfm; Operating Pressure: 0 to 15 psi; Fittings: OBAC; Brand and Series: Allegro 9806.
ALLEGRO
Ambient Air Pump: 0 to 5 cfm, 0 to 15 psi, 1/4 hp Horsepower, OBAC, Allegro 9806, 1 Respirators (MPN 9806 OBAC). Key specifications — Air Flow: 0 to 5 cfm; Operating Pressure: 0 to 15 psi; Fittings: OBAC; Brand and Series: Allegro 9806.
Ambient Air Pump: 0 to 10 cfm, 0 to 15 psi, 3/4 hp Horsepower, Schrader, Allegro 9821, 2 Respirators (MPN 9821 W/SCHRADER). Key specifications — Air Flow: 0 to 10 cfm; Operating Pressure: 0 to 15 psi; Fittings: Schrader; Brand and Series: Allegro 9821.
ALLEGRO
Ambient Air Pump: 0 to 10 cfm, 0 to 15 psi, 3/4 hp Horsepower, Schrader, Allegro 9821, 2 Respirators (MPN 9821 W/SCHRADER). Key specifications — Air Flow: 0 to 10 cfm; Operating Pressure: 0 to 15 psi; Fittings: Schrader; Brand and Series: Allegro 9821.
Replacement Inlet Filter: Allegro (MPN 9700-01). Key specifications — Brand and Series: Allegro.
ALLEGRO
Replacement Inlet Filter: Allegro (MPN 9700-01). Key specifications — Brand and Series: Allegro.
High Pressure Regulator: Allegro (MPN 9891-11). Key specifications — Brand and Series: Allegro.
ALLEGRO
High Pressure Regulator: Allegro (MPN 9891-11). Key specifications — Brand and Series: Allegro.
Service Kit: Allegro (MPN 9700-50). Key specifications — Brand and Series: Allegro.
ALLEGRO
Service Kit: Allegro (MPN 9700-50). Key specifications — Brand and Series: Allegro.
Ambient Air Pump: 0 to 20 cfm, 0 to 12 psi, Schrader, Allegro 9850, 4 Respirators (MPN 9850 W/1/4 SCHRADER). Key specifications — Air Flow: 0 to 20 cfm; Operating Pressure: 0 to 12 psi; Fittings: Schrader; Brand and Series: Allegro 9850.
ALLEGRO
Ambient Air Pump: 0 to 20 cfm, 0 to 12 psi, Schrader, Allegro 9850, 4 Respirators (MPN 9850 W/1/4 SCHRADER). Key specifications — Air Flow: 0 to 20 cfm; Operating Pressure: 0 to 12 psi; Fittings: Schrader; Brand and Series: Allegro 9850.
Ambient Air Pump: 0 to 10 cfm, 0 to 15 psi, 3/4 hp Horsepower, Hansen, Allegro 9821, 2 Respirators (MPN 9821 W/ 3/8 HANSEN). Key specifications — Air Flow: 0 to 10 cfm; Operating Pressure: 0 to 15 psi; Fittings: Hansen; Brand and Series: Allegro 9821.
ALLEGRO
Ambient Air Pump: 0 to 10 cfm, 0 to 15 psi, 3/4 hp Horsepower, Hansen, Allegro 9821, 2 Respirators (MPN 9821 W/ 3/8 HANSEN). Key specifications — Air Flow: 0 to 10 cfm; Operating Pressure: 0 to 15 psi; Fittings: Hansen; Brand and Series: Allegro 9821.