AS Connection, LGDV M1 — M1-AS Lung Governed Demand Valve, Short

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M1 Series

AS Connection, LGDV M1 — M1-AS Lung Governed Demand Valve, Short

MSA M1-AS Lung Governed Demand Valve (LGDV) — Short version with Australian Standard (AS) bayonet connection. Positive-pressure demand valve designed for the MSA M1 SCBA platform. Short body configuration suits standard donning and AS/NZS full face mask connections (LO-BN-L1). Replacement / spare LGDV for the M1 SCBA system; also used when ordering via M1 ATO (Assemble-To-Order) code.

OEM Part Number / SKU

10207729

Warranty

10 Years (manufacturing/workmanship defect as part of M1 SCBA system)

Part Number

10207729

Component

M1-AS Lung Governed Demand Valve (LGDV)

ATO Code

LO-BN-L1 (AS Short)

Connection Type

AS — Australian Standard bayonet push-to-connect (compatible with G1 PS mask)

Body Length

Short (L1)

Operating Mode

Positive-pressure demand (pressure-demand)

Intermediate Pressure Input

approx. 6.0–8.0 bar

Max Flow Rate

approx. 600 L/min @ 20 bar; approx. 1000 L/min @ 300 bar

Compatible SCBA

MSA M1 SCBA (all configurations)

Connection to Mask

G1 PS full face mask (AS bayonet)

Removable

Yes (designed for tool-free removal from DV holder)

Machine Washable

Yes (as part of complete M1 SCBA)

Approvals

Australia (BSI) M1 SCBA; AS/NZS 1715; AS 4272 Weight: approx. 300 g Note: When ordering with a new M1 SCBA, specify via M1 ATO code (L1 = AS Short)

Approvals

Australia (BSI) M1 SCBA; AS/NZS 1715; AS 4272

Weight

approx. 300 g

Note

When ordering with a new M1 SCBA, specify via M1 ATO code (L1 = AS Short)

• Australian Standard (AS) bayonet push-to-connect — direct compatibility with G1 PS full face mask for Australian/NZ market
• Short body (L1) — optimised ergonomic reach for standard-frame wearers; reduces mask donning effort
• Positive-pressure demand operation — maintains slight positive pressure inside mask preventing inward leakage
• Tool-free removable design — allows fast LGDV sharing between wearers during extended operations
• Rubber diaphragm and intermediate pressure hose — redesigned core reduces permeation risk vs. older designs
• Reflective edges on LGDV housing — enhanced visibility in low-light firefighting environments
• Increased chemical resistance — innovative material composition for mask, LGDV and pneumatic components
• Machine washable (no disassembly required) as part of complete M1 SCBA system
• Genuine OEM MSA spare/replacement part — maintains M1 SCBA system approvals and warranty
• Compatible with CleanConnect rescue line coupling — medium-pressure flush on connection

Compatible SCBA Platform:
– MSA M1 SCBA (all configurations: 768610, 768611, 768612 and all ATO variants)

Compatible Full Face Masks:
– G1 PS Full Face Mask — AS bayonet (push-to-connect, PS-MaXX) — Small, Medium, Large
– Note: NOT compatible with G1 AE (M45x3) or G1 ESA connection masks — specify correct LGDV variant

Other M1 LGDV Variants (for reference):
– 10206631 — LGDV M1, LO-BN-L2, AS Long (same AS connection, longer body)
– 10207730 — LGDV M1, LO-BN-L3, AS Fix (fixed/non-removable)
– 10207756 — LGDV M1, LO-BN-L9, AS-B Bypass Short
– 10207728 — LGDV M1, LO-BN-L0, AS-B Bypass Long
– 10207751 — LGDV M1, LO-C4-L4, AE M45x3 Short (European thread mask)

Required with this LGDV:
– LGDV Holder / DV Holder (M1 backplate accessory — ensures correct positioning)
– G1 PS Full Face Mask (sold separately)

Testing & Maintenance:
– MSA SmartCHECK Automatic Test Bench (LGDV flow and function test per EN/AS standard)
– Genuine MSA M1 LGDV spare parts and seal kits

Product Page (AU): https://au.msasafety.com/Supplied-Air-Respirators-(SCBA)/Self-Contained-Breathing-Apparatus-(SCBA)/MSA-M1-SCBA/pn/10207729