NSN 4240-01-356-7993
Breathing Apparatus ValvePricing & Availability Check
Submit this form for stock availability and pricing.Inventory
This product may be available in the following quantities and conditions.
- NS: 2
Please note that inventory for this NSN was updated 08/15/2025 and may have changed since then. Request a quote for up to date pricing and availability.
Product Definition Definition of approved item name (AIN): "VALVE,BREATHING APPARATUS"
A item specifically designed to automatically/manually maintain outlet pressure in a divers helmet/breathing apparatus. It is designed for use with breathing gasses.
4240-01-356-7993 Spec. NSN part characteristics
Cross Reference Parts Part numbers that meet the specification outlined on this page and set by the OEM
Identification Item Identification Guide (IIG) and Item Name Code (INC)
Special material and handling
Indicates there is no information in the hmirs. The nsn is in a fsc in table ii of fed std 313 and a msds may be required by the user. The requirement for a msds is dependent on a hazard determination of the supplier or the intended end use of item.
Precious metal content is unknown
The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
National motor freight and handling
Freight Codes Definitions:
No special type of cargo code applicable.
Safety and rescue equipment.
Trailers, vehicles, machinery, shop and warehouse equipment and supplies including special tools and equipment, ground servicing.
Shipment is not a consolidation and does not exceed 84 inches in any dimension.
Other or no special handling required (sh)