Dwyer Instruments Inc. · Electronic Components
1640-1
Switch, Pressure
Part Number1640-1
ManufacturerDwyer Instruments Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-01-499-6872 (NSN)
Federal Item NameSWITCH,PRESSURE
Federal Supply Class5930 — Switches
Contact AdjustabilityACTUATION POINT ADJUSTABLE
Media For Which DesignedGAS OR GAS, LIQUEFIED
Mounting MethodBRACKET(S) AND UNTHREADED HOLE(S)
Terminal TypeSCREW
Pressure Switch TypeDIFFERENTIAL
Nonpile Up Contact Arrangement1 POLE, DOUBLE THROW, BOTH POSITIONS MAINTAINED
Contact Adjustment Range+0.20 TO 1.00 ACTUATION POINT INCHES OF WATER
Operating Temp Rating-30.0 FAHRENHEIT MINIMUM AND 150.0 FAHRENHEIT MAXIMUM
Proof Pressure25.00 POUNDS PER SQUARE INCH GAGE
ESD/EMICode A — ESD/EMI sensitive item
RH Electronics, Inc. — independent stocking distributor since 1982.
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Frequently asked
Is 1640-1 available?
We can source 1640-1 even if it isn't in our active stock list. As an independent distributor we reach inventory outside the franchise channel — including hard-to-find and obsolete parts. Send us a quote request.
Is 1640-1 by Dwyer Instruments Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 1640-1 has been discontinued, we can often source remaining stock or qualified alternates. Contact us with your quantity and target date.
How does RH Electronics verify parts like 1640-1?
Every incoming shipment is inspected under our ISO 9001:2015 quality system — documentation, markings, and construction checked against known-good references. For deeper analysis, we direct work through accredited independent labs. We've been an ERAI member since 1998 and a GIDEP participant.
Can you find a cross-reference or alternate for 1640-1?
Yes. Our team reads part numbers the way they were designed — decoding family, speed, temperature grade, package, and reliability level — to identify acceptable alternates when the exact part isn't available. Submit a quote request and we'll advise.