We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

ALLEGRO Supplied Air Respirator Constant Flow: Gen Purpose, OBAC, Ambient Air Pump - Allegro Partial SAR Assemblies
ALLEGROAllegro Partial SAR Assemblies

ALLEGRO Supplied Air Respirator Constant Flow: Gen Purpose, OBAC, Ambient Air Pump

The Allegro 9904 Series Supplied Air Respirator Constant Flow (MPN 9920) is a general-purpose, half-mask partial SAR assembly with a silicone rubber seal. It operates at 12 psi using an OBAC fitting and an ambient…

SKU 3G-OTH-748812

Brand
ALLEGRO
Item
Supplied Air Respirator Constant Flow: Gen Purpose, OBAC, Ambient Air Pump
Category
Allegro Partial SAR Assemblies
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
9920
Series
9904
Type
OBAC, Ambient Air Pump, 12 psi, Half Mask, 9904
Fittings
OBAC
Air Source
Ambient Air Pump
Application
General Purpose
Headgear Type
Half Mask
Headgear Material
Silicone Rubber (Seal)
Operating Pressure
12 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 9904 Series Supplied Air Respirator Constant Flow (MPN 9920) is a general-purpose, half-mask partial SAR assembly with a silicone rubber seal. It operates at 12 psi using an OBAC fitting and an ambient air pump as its air source.

Frequently Asked Questions

What is the Allegro 9904 Supplied Air Respirator used for?

The Allegro 9904 Series Supplied Air Respirator Constant Flow (MPN 9920) is used for general-purpose respiratory protection in industrial environments. It delivers breathable air from an ambient air pump at 12 psi through a half-mask with a silicone rubber seal, suitable for painting, chemical handling, and grinding.

What are the specifications of the Allegro 9920 respirator?

The Allegro 9920 is a constant-flow supplied air respirator from the 9904 Series. It features a half-mask headgear with a silicone rubber seal, OBAC fittings, and operates at 12 psi using an ambient air pump. It is designed for general-purpose applications and is manufactured by Allegro.

Where to buy the Allegro 9920 supplied air respirator worldwide?

3G Electric supplies the Allegro 9920 supplied air respirator to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery for this partial SAR assembly. Contact us to source the 9904 Series constant-flow respirator for your facility.

How to maintain the Allegro 9904 half-mask respirator?

To maintain the Allegro 9904 half-mask respirator, inspect the silicone rubber seal for cracks or wear before each use. Clean the mask with mild soap and water, and replace the seal if damaged. Ensure the ambient air pump and OBAC fittings are free of debris and operate at the specified 12 psi.

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 partial sar assemblies. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

More from ALLEGRO

View all ALLEGRO parts
Cold/Cool Air System Flow Adapter: 9910 (MPN 9910-11EF). Key specifications — Series: 9910.
ALLEGRO
Cold/Cool Air System Flow Adapter: 9910 (MPN 9910-11EF). Key specifications — Series: 9910.
Supplied Air Respirator: Welding, OBAC, Ambient Air Pump, Helmet, 9904-W. Key specifications — Series: 9904-W; Headgear Type: Helmet; Headgear Material: Stedprene (Neck Cape); Application: Welding; Fittings: OBAC; Air Source: Ambient Air Pump.
ALLEGRO
Supplied Air Respirator: Welding, OBAC, Ambient Air Pump, Helmet, 9904-W. Key specifications — Series: 9904-W; Headgear Type: Helmet; Headgear Material: Stedprene (Neck Cape); Application: Welding; Fittings: OBAC; Air Source: Ambient Air Pump.
Full Mask Respirator: 9902 (MPN 9902-EF). Key specifications — Series: 9902.
ALLEGRO
Full Mask Respirator: 9902 (MPN 9902-EF). Key specifications — Series: 9902.
Supplied Air Respirator: Gen Purpose, OBAC, Ambient Air Pump, 15 psi, Helmet, 9904. Key specifications — Series: 9904; Headgear Type: Helmet; Headgear Material: Stedprene (Neck Cape); Application: General Purpose; Fittings: OBAC; Air Source: Ambient Air Pump; Operating Pressure: 15 psi.
ALLEGRO
Supplied Air Respirator: Gen Purpose, OBAC, Ambient Air Pump, 15 psi, Helmet, 9904. Key specifications — Series: 9904; Headgear Type: Helmet; Headgear Material: Stedprene (Neck Cape); Application: General Purpose; Fittings: OBAC; Air Source: Ambient Air Pump; Operating Pressure: 15 psi.
Breathing Air Blower w/ EF Couplers: 3/4 in Parker, 2.5 psi, 9815 (MPN 9815-EF). Key specifications — Series: 9815; Fittings: 3/4 in Parker; Operating Pressure: 2.5 psi.
ALLEGRO
Breathing Air Blower w/ EF Couplers: 3/4 in Parker, 2.5 psi, 9815 (MPN 9815-EF). Key specifications — Series: 9815; Fittings: 3/4 in Parker; Operating Pressure: 2.5 psi.
Breathing Cold Air Source w/ EF Couplers: 3/4 in Parker, 9825 (MPN 9825-EF). Key specifications — Series: 9825; Fittings: 3/4 in Parker.
ALLEGRO
Breathing Cold Air Source w/ EF Couplers: 3/4 in Parker, 9825 (MPN 9825-EF). Key specifications — Series: 9825; Fittings: 3/4 in Parker.
Deluxe Source Pre-Filter (316 CFM): 9350 (MPN 9350-04). Key specifications — Series: 9350.
ALLEGRO
Deluxe Source Pre-Filter (316 CFM): 9350 (MPN 9350-04). Key specifications — Series: 9350.