WASCO / Wasco Inc. Pressure and Vacuum Switches

American precision pressure and vacuum switches WASCO / Wasco Inc.: ultra high purity UHP series (UC8, UC9, UHP150, SV120), miniature switches P6 and P11, industrial controls P110, P250, P400 and Barracuda solid state transducers. Professional engineering selection by equipment nameplate.

WASCO (Wasco Inc.) UC8 and UC9 ultra high purity pressure switches

WASCO (Wasco Inc.) UC8 and UC9 ultra high purity electromechanical pressure switches are engineered for semiconductor gas delivery panels and ultra-clean piping. Welded wetted surfaces feature five Ra microinch electropolished finish and helium leak tightness below one times ten to the minus ninth.

Ultra high purity UHP construction tailored for corrosive semiconductor process media
Electropolished wetted internal chamber achieving five Ra microinch surface roughness
All-welded 316L stainless steel body eliminating internal elastomeric seals
Helium mass spectrometer leak integrity verified to one times ten to the minus ninth

WASCO (Wasco Inc.) UHP160 and SV120 ultra high purity vacuum switches

Precision vacuum switches WASCO (Wasco Inc.) UHP160 and SV120 are assembled in ISO Class 5 cleanrooms for semiconductor tools and vacuum instrumentation. Stainless steel welded capsule sensing elements deliver superior setpoint repeatability under deep vacuum regimes.

Cleanroom assembly and helium inspection executed under ISO Class 5 environment
Corrosion-resistant stainless steel welded capsule pressure sensing mechanism
Equipped with male or female face-seal VCR fittings and orbital weld tube stubs
Superior switching setpoint repeatability across frequent pumpdown sequences

WASCO (Wasco Inc.) P6, P10 and P11 miniature pressure switches

Compact pressure switches WASCO (Wasco Inc.) series P6, P10 and P11 are designed for tight installations in medical devices, compressors, and hydraulic panels. Options include automatic reset configurations (P6, P10) as well as manual reset units (P11) for system safety interlocks.

Ultra-compact footprint engineered for dense industrial and medical enclosures
Available in automatic resetting or manual latching safety trip configurations
Welded stainless steel construction resisting continuous mechanical vibration
Versatile termination options including flying leads, Faston spades, or DIN plugs

WASCO (Wasco Inc.) P110 and P250 industrial pressure switches

Heavy-duty industrial electromechanical switches WASCO (Wasco Inc.) P110 and P250 operate reliably in hydraulics, pump skid automation, and fire protection systems. Series P250 integrates overpressure limiters preventing diaphragm failure caused by extreme hydraulic spikes.

Operating pressures up to 500 psi for P110 alongside high-pressure P250 ratings
Integrated mechanical stop mechanism safeguarding diaphragm against pressure spikes
Rugged stainless steel housing threaded with standard NPT or SAE process ports
Heavy-duty electrical switch contacts supporting up to five amperes resistive load

WASCO (Wasco Inc.) P400 and P500 pressure switches

Rugged pressure switches WASCO (Wasco Inc.) series P400 and P500 cover operating envelopes up to 4000 psi. Series P400 features a stainless steel body for severe environments, while series P500 provides an economical brass chassis optimized for HVAC, compressors, and automation.

Extended operational pressure monitoring window reaching up to 4000 psi
Cost-effective machined brass body (series P500) for HVAC and pneumatic skids
Heavy-gauge stainless steel construction (series P400) for aggressive liquids
Factory preset switching thresholds or field-adjustable setpoint calibration

WASCO (Wasco Inc.) V110, V250 and V500 vacuum switches

Electromechanical vacuum switches WASCO (Wasco Inc.) V110, V250 and V500 ensure accurate vacuum interlock monitoring in pick-and-place robots, packaging machines, and deaeration skids. Configurations include brass and stainless steel enclosures with diaphragm or capsule mechanisms.

Precision negative pressure tracking across packaging and robotic vacuum chucks
Rugged housing options in brass (V500) or machined stainless steel (V110, V250)
Exceptional cycle endurance resilient against lubrication aerosol and mist
Dependable electrical telemetry switching across low and medium vacuum spans

WASCO (Wasco Inc.) Barracuda solid state pressure transducers

Solid state pressure transducers WASCO (Wasco Inc.) Barracuda series provide continuous analog pressure telemetry in semiconductor tools and chemical processing equipment. Piezoresistive solid state cells deliver millions of operating cycles without mechanical fatigue or calibration drift.

Continuous linearized analog output in standardized voltage or current formats
Piezoresistive semiconductor sensing cell eliminating wearing mechanical linkages
Helium leak integrity verified to one times ten to the minus ninth for toxic gases
Multi-million cycle operating lifespan maintaining factory calibration curve

WASCO (Wasco Inc.) fittings, harnesses and accessories

Installation hardware, process fittings and electrical harnesses from WASCO (Wasco Inc.) ensure seamless sensor commissioning across industrial facilities. Offerings include VCR adapters, fluoropolymer O-rings, and ruggedized industrial connectors rated up to IP67.

Process port adapters across NPT, SAE, BSPP threads and VCR face-seal fittings
Shielded electrical cable harnesses with molded M12, DIN, or flying lead plugs
Chemical-grade sealing gaskets and diaphragms in Viton, EPDM, and nickel alloys
Mounting brackets and pressure pulsation snubbers protecting sensing chambers

Setpoint calibration and hysteresis adjustment in WASCO UC8 and UC9 switches

Precise setpoint calibration across electromechanical pressure switches WASCO / Wasco Inc. series UC8 and UC9 is essential for safe semiconductor gas distribution. The wetted metal diaphragm deflects with line pressure fluctuations, driving a microswitch equipped with gold-plated contacts.

Commissioning requires verifying trip thresholds against a calibrated secondary pressure standard using dry high-purity nitrogen. The factory setpoint is secured with a locking screw and tamper-evident sealing compound.

If trip points drift by more than one percent of span, engineers adjust the internal calibration nut while tracking contact reset deadband.

Face-seal VCR fitting installation and helium leak testing for UHP160

Installing ultra high purity vacuum switches WASCO / Wasco Inc. series UHP160 and SV120 into semiconductor gas sticks requires strict cleanroom procedures conforming to SEMI guidelines. Male and female face-seal VCR fittings demand fresh nickel or silver-plated metal gaskets upon each reassembly.

Nuts are tightened with calibrated torque wrenches to one-eighth of a turn past finger-tight contact. Joint leak tightness must be confirmed with a helium mass spectrometer leak detector utilizing spraying hood techniques.

Allowable helium leak rates across the welded envelope must not exceed one times ten to the minus ninth standard cubic centimeters per second.

Maintenance of miniature P6 switches and manual latch resetting for P11

Miniature pressure switches WASCO / Wasco Inc. series P6, P10 and P11 deliver continuous safety monitoring inside medical oxygen concentrators, industrial lasers, and compact compressor enclosures.

Series P11 incorporates a manual reset latch that locks switch contacts open following an overpressure trip. To restore operation, technicians correct hydraulic causes and press the external reset plunger on the switch body.

Scheduled maintenance includes verifying microswitch contact insulation resistance, checking wiring harnesses for mechanical chafing, and ensuring process port thread integrity.

Diaphragm protection against pressure spikes in heavy-duty P250 switches

In high-cycling hydraulic machinery and pump skids, rapid directional valve switching induces extreme hydraulic water hammer shocks that rupture conventional sensor diaphragms. Heavy-duty industrial switches WASCO / Wasco Inc.

series P250 feature internal mechanical stops absorbing overpressure spikes up to four times rated setpoints. To maximize service life, installation of porous brass or stainless steel snubber restrictors at the process port is strongly advised.

Routine inspections involve cleaning impulse sensing lines and checking for hydraulic oil sludge accumulation inside the pressure port.

Operating V110 and V500 vacuum interlocks in robotic pick-and-place lines

Electromechanical vacuum switches WASCO / Wasco Inc. series V110, V250 and V500 deliver positive component grip confirmation in robotic handling end-effectors, packaging machines, and vacuum deaerators.

The internal capsule sensor actuates electrical contacts once target suction levels are achieved inside suction cups, signaling arm movement sequences. Under dusty packaging facility conditions, paper fibers and aerosol particles can enter sensing orifices.

Servicing includes blowing out pneumatic lines with clean dry air, replacing upstream inline vacuum filters, and testing contact response latency.

Signal calibration and electrical shielding for Barracuda solid state sensors

Solid state pressure transducers WASCO / Wasco Inc. Barracuda series transmit continuous linearized analog signals directly into programmable logic controllers and SCADA data loggers.

The piezoresistive silicon chip exhibits no mechanical wear, delivering stable voltage proportional to system pressure. To suppress high-frequency electromagnetic interference from variable frequency motor drives, signal cabling must utilize grounded copper braided shielding.

Calibration curves are verified annually by checking transducer output currents against calibrated test gauges at five equidistant pressure steps.

WASCO / Wasco Inc. and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of WASCO / Wasco Inc. and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.