Series 20 Reflex and Transparent Gages

The Series Clark-Reliance® Jerguson® 20 is the most commonly specified gage and will cover 80-85% of all applications encountered. Features include recessed gasket surfaces & shrouded covers.


  • Pressure: Up to 3270 psi

  • Temperature: Up to 800˚F

  • Visible Length: 3-3/4” up to 125-1/2”

  • Connections: 1/2” & 3/4” FNPT

  • Conformance: NACE MR0175 & MR0103

For more info, please visit:

Magnetic Liquid Level Indicator

The Magnicator® II unique design uses two 360º annular Alnico 8 ring magnets with opposing north poles. The force deflection creates a field stronger than any other float magnet arrangement, greater than 90 gauss at the centerline of indicator flags. Physics has guaranteed that the Magnicator® II float has the strongest magnetic field which translates to the most reliable instrument.


  • Pressure: Up to 3500 psig

  • Temperature: -328˚F to 1000˚F

  • Durable: Flash proof indicator eliminates float damage

  • Process Connections: 1/2” thru 6”

  • ASME Flanges: 150# thru 2500#

  • Versatile Design: Optional chambers & flags available

  • Compliance: ASME B31.1 & B31.3

  • Chamber Construction: Standard Sch. 40, Sch. 80 & 160 available for high pressure service

  • Conformance: NACE MR0175 & MR0103

  • Materials: Optional materials of construction available

  • Benefits: Replaces sight glasses and requires less maintenance

  • Emissions: No glass, no leak paths

  • Indication: Optional visual indicators

  • Service: Cryogenic or high temperature service

  • Optional LED Upgrade: NightStar® LED illuminators for 24 hour visibility

  • Accuracy: Guided wave radar for actual fluid level

  • Measurement Range: 12” to 240”, Up to 60’ available

  • Switching Options: Magnetostrictive transmitter, Reed switch transmitter and low power reed switch

For more info, please visit:

Series 300L Reflex & Transparent Gages

An economical gage with increased visible range. Features include Jerguson® 25mm glass, recessed gaskets, non-shrouded covers and ASTM grade bolting.


  • Pressure: Up to 300# ANSI

  • Temperature: Up to 600˚F

  • Visible Length: 12” up to 126”

  • Connections: 1/2” & 3/4” FNPT

  • Conformance: NACE MR0175 & MR0103

  • Parts: ASTM or ASME B31.3

NOTE: Not for high pressure

For more info, please visit:

Boiler Level Indication System

The Clark-Reliance® Eye-Hye® SmartLevel™ uses system intelligence to distinguish dirty probes from probes that need to be replaced, eliminating the need for frequent blowdowns. By notifying operators that the probes need to be cleaned, the system helps provide reliable, accurate boiler water level. Safety is enhanced and turbine and generation efficiency are optimized.


  • System Intelligence: Pinpoints any module or peripheral failure in the system to simplify repair

  • Remote Monitoring: Multiple remote monitors for easy monitoring and increased safety

  • Compact Control Monitor: Standard compact control monitor panel

  • Global Power: 85 to 264 VAC 50/60 Hz

  • Continuous Monitoring: Indicator cycles with controller for continuous fail safe communication

  • Enclosure Rating: NEMA 4X-IP66 rated enclosures

  • Probe Maintenance: Repairable one-piece conductivity probes

For more info, please visit:

Series 146 & 147 Integral Bonnet Gage Valves

Provides long trouble-free service at an economical cost and are perfect companions for Jerguson® liquid level gages.


  • Trim: Stainless Steel stem and ballcheck

  • Failsafe: Ballcheck instantaneously shuts off flow in case of gage failure

  • Removal/Replacement: Union connection provides easy removal of gage without draining

  • Maintenance: Gage connections are offset 7/8” for easy swabbing of the glass without draining

  • Connections: 1/2”, 3/4” & 1”

  • Valve Rating: 2400 PSI @ 100˚F, 1323 PSI @ 800˚F

NOTE: Not for steam service

For more info, please visit:

Water Gage System

The Clark-Reliance® Simpliport® 180 lets you view boiler water level at any angle or distance. Installed worldwide since 1962, Simpliport® 180 boiler water level glass gages provide reliable direct-reading, bi-colored indication. Design improvements have made installation and maintenance much easier.


  • Power: 120 or 240 VAC

  • LEDs: High intensity 10 year red & green

  • Pressure: Up to 3000 psi

  • Ambient Temperature: -40˚F to 170˚F

  • Indoor/outdoor: Easy to install, maintain and field retrofit

  • Construction: 304 Stainless Steel cage, illuminator and wide angle optic hood

  • Conformance: Meets ASME Boiler Code, Section One

  • 180˚ View: See steam & water levels easily within 180˚ viewing angle of the wide angle hood

  • Lengths: 101/4” to 715/8”

  • Spiral wound sealing gaskets

  • Commissioning: Commissioning kit included (No hot-torquing required)

For more info, please visit:

Series 364 Safety Ballcheck Gage Valve

Patented innovative core design, locating an internal ballcheck within a metal seated valve which guarantees proper commissioning, eliminates operator error and improves safety and reliability.


  • Material: Carbon steel & 316 Stainless Steel

  • Connections: 1/2” FNPT & 2” MNPT

  • Pressure: 900# ANSI

  • Locking Handle: Quarter turn position locking handle clearly indicates operation status

  • Conformance: Meets API Class V shut-off requirements

  • Low Emissions: To API 641 & ISO 15848-1

  • NACE: Meets MR0175 & MR0103

NOTE: Not for steam service

For more info, please visit:

Series JMSVT Vibrating Tuning Fork Level Switch

Using the principles of a tuning fork, Piezo-electric crystals force the forks to oscillate at fundamental frequency, natural resonance. If installed as a high alarm, forks are free to oscillate in air. As liquid level rises, the forks dampen and signal the JMSVT to switch.


  • Durable: Resistant to bubbles & vibration

  • Reliable: Heartbeat Led, failsafe high, magnetic test point & hygienic fittings

  • Low Profile: Small fork for minimal vessel intrusion

  • Circuit Protection: Reverse polarity protected

  • Material: Wetside: 316L S.S., Dryside: 304 S.S.

  • Connections: 3/4” & 1”

  • Temperature: Wetside: -40˚F to 302˚F, Ambient: -40˚F to 176˚F, (122˚F if wetside is 302˚F)

  • Pressure: 1480 psig max.

For more info, please visit:

Series 100/200 Threaded & Series 600/900 Flanged Full-View Sight Flow Indicators

The Clark-Reliance® Jacoby Tarbox® threaded and flanged bulls-eye sight flow indicator models are engineered to meet ASME B31.1 & 31.3 Power and Chemical Piping Codes. ASTM standard materials of construction. Full rated ASME systems are available. These sight flow indicators provide out of the box compliance with ASME B31.1 & B31.3, NACE MR0175/ISO15156-1 MRO103 (All wetted metals), API 614, CRN – All Provinces, and PED (Specify for proper tagging).


  • Minimal Pressure Drop: Non-rotor models have unrestricted flow with internal openings no smaller than the pipes inside diameter

  • Personnel Safety: Safely view process properties such as color, clarity, air enhancement & interface

  • Single or Dual Windows: Process view maximized to match or exceed inside pipe diameter

  • Economical: Economically view drain, lube, hydraulic, condensate, food and return lines

For more info, please visit: