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electrical wet, dry, preaction, deluge or FOAM-Water sprinkler system
indoors / outdoors nema 4 conduit hub required, style - rectangular, dimension - 4-3/4in. (120.7mm) wd. x 2-1/4in. (57.2mm) d. x 4-3/8in. (111.1mm) h.; pressure connection 1/2in. brass npt male; cover - DIE-Cast w/ textured red powdercoat finish; base - plated steel; electrical connection - 7/8in. (22mm) diam. hole through base; wrench flats - 1-5/8in. (41.3mm) across flats; factory adjustment - operates on pressure increase at 6 +/- 1 psi (41 +/- 6.9kpa) , decrease at 5 +/- 1 psi (34 +/- 6.9kpa) ; w/ available adjustment to operate on pressure between 4 and 20 psi (27 and 138 kpa) w/ caution do not modify factory setting when switch is used as alarm pressure switch; max. differential - 1 psi (6.9 kpa) , max. system pressure - 250 psi (1.723 kpa) ; switch contact - 1 single pole double throw (spdt) snap action contact switch, 15.0 amps at 125/250 vac, 2.5 amps at 30 vdc; trips municipal fire boxes, signal pump START-Up; tamper resistance cover w/ special key for removal
include: installing, warning, caution, environmental spec. instructions, warranty and maintenance agreement
A switch which is actuated by changes of pressure (vacuum) on any gas or liquid and by changes in ambient temperature. The contacts for the temperature and pressure sensitive elements may be common.
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.
Item does not contain precious metal.
The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
HMIC: Hazardous Material Indicator Code. A one position code that identifies a hazardous item.
PMIC: Precious Metal Indicator Code. A one position code which identifies items that have precious metals as part of their content. precious metals are those metals generally considered to be uncommon, highly valuable, and relatively superior in certain properties such as resistance to corrosion and electrical conductivity.
ESD: Electrostatic Discharge. Indicates if an item is susceptible to electrostatic discharge or electromagnetic interference damage. electrostatic discharge damage occurs when an accumulation of static electricity generated by the relative motion or separation of materials is released to another item by direct contact. electromagnetic interference damage occurs when an item comes into proximity with an electrostatic or magnetic field.
ENAC: Enviromental Attribute Code. Identifies items with environmentally preferred characteristics.
CRITL: Criticality Indicator Code. Indicates an item is technically critical by tolerance, fit, application, nuclear hardness properties, or other characteristics.