Pilots & Accessories
Pilots
Pilot Pressure Regulator
Indirect-Acting / Proportional Control
Indirect-acting pneumatic pilot regulator designed for accurate proportional pressure control in gas and air systems. Used with control valves to maintain stable output pressure based on adjustable signal settings. Built with remote mounting capability and NACE-compliant construction for flexible installation in demanding environments.
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Highlights
- Indirect-acting design provides proportional output pressure in response to sense pressure changes
- Single adjusting screw for reliable set point changes with known incremental response
- Remote installation capability; unit can be piped at any distance from the control valve
- NACE MR0175-compliant construction standard; 1/4″ NPT connections
- Design pressure up to 285 PSIG; pressure ranges 5-125 PSI or 15-285 PSI
- Nitrile or fluorocarbon diaphragm options; temperature range -20°F to 300°F
Application
- Gas and air applications requiring proportional pneumatic control
- Upstream and downstream pressure sensing on control valve systems
- Instrument supply protection and pressure reducing service
- Pilot signal source for P5300/P5301 and P5350/P5351 regulators
Pilot Pressure Regulator
Direct Or Indirect Acting / Control Valve Service
Pneumatic pilot regulators designed for use with high-pressure control valves in production systems. Available in direct-acting and indirect-acting configurations to match pressure-opening or pressure-closing valve applications. Built with field-reversible operation and configurable materials for reliable performance in NACE-compliant service.
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Highlights
- Single adjusting screw; 40 PSIG per turn set point change (125-1500 PSIG range)
- Stainless steel bellows assembly for accurate, proportional sense pressure response
- PL91 indirect-acting and PL92 direct-acting configurations; field-reversible without line removal
- Supply pressure 20 or 30 PSIG; sense pressure range 75-500, 75-750, or 125-1500 PSIG
- Steel or stainless steel body, housing, and internals; nitrile or fluorocarbon diaphragm
- Mounting bracket or pipe mount options; 1/4″ NPT end connections
Application
- Pilot signal source for P7100 and P7200 series high-pressure control valves
- Separators, scrubbers, liquid level controls, and wellhead pressure control
- Back pressure and pressure reducing service in P71R/B and P72R/B control packages
Sense Line Protector
Overpressure Protection / Instrument Safeguard
In-line adjustable pressure limiter designed to protect downstream instruments and pilots from overpressurization and pressure spikes. Automatically shuts off flow when pressure exceeds set limits and reopens once conditions return to normal. Rated for high-pressure service with configurable materials for reliable protection in demanding environments.
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Highlights
- Automatically shuts off downstream flow when input pressure exceeds the adjustable set point
- Reopens automatically when pressure returns to acceptable levels; intermittent vent design
- Single adjustment screw; set point adjustable from 0 to 300 PSIG max output
- 4000 PSIG body pressure rating; 1/4″ NPT connections
- Carbon steel or stainless steel body options; Buna-N or fluorocarbon diaphragm
- Temperature range -40°F to 200°F (Buna-N) or 0°F to 300°F (fluorocarbon)
Application
- Sense and supply line protection for PL90 pilots (used in P71R/B and P72R/B packages)
- Downstream instrument protection on high-pressure control valve systems
- Overpressure protection for pressure-sensitive pneumatic devices
HP Sense Line Protector
Sense Line Protector (High Pressure)
High-pressure sense line protector designed to safeguard instruments from overpressurization in severe service applications. Closes at a factory-set pressure to isolate downstream equipment and prevent damage. Built with stainless steel construction and corrosion-resistant seals for use in sour gas and harsh environments.
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Highlights
- Closes at set pressure to protect downstream instruments from overpressurization
- Factory set at 3600 PSIG; maximum pressure rating 5050 PSIG
- Stainless steel body; fluorocarbon seals
- 1/4″ NPT male x female connections; compact in-line installation
- Recommended sense line protector for P91/92 pilot-equipped control packages
Application
- Instrument overpressure protection on high-pressure separators and production equipment
- Sense line protection for PL91/92 pilots on high-pressure control valve packages
- Sour gas and corrosive service applications requiring high-pressure line protection
Temperature Controls
Pneumatic Temperature Controller
Process Control / Pneumatic Actuation
Pneumatically operated temperature controller designed for process temperature regulation in pressurized vessels. Available in throttle and snap-acting modes to provide responsive control based on temperature changes. Built with durable sensing elements and materials for reliable operation in demanding environments.
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Highlights
- Indirect throttle mode and direct snap mode configurations available
- Stainless steel sensing element; temperature range -30°F to 400°F (-34°C to 204°C)
- Thermowell options in 304SS or carbon steel for installation on pressurized vessels
- 500 PSIG working pressure without thermowell; 4000 PSIG with thermowell
- Supply pressure 5 to 30 PSIG; 1/4″ NPT inlet, outlet, and exhaust ports
- Ductile iron bonnet; 304SS base and sensing element; nitrile elastomers
Application
- Temperature control on heaters, emulsion treaters, and reboilers
- Steam generators, heat exchangers, and salt bath heaters
- Cooler shutter control on gas processing equipment
Temperature Shutdown Device
High-Temp Protection / Safety Shutoff
High-temperature shutdown device designed to automatically stop fuel gas flow when vessel temperature exceeds a preset limit. Acts as a safety control to prevent overheating conditions in heated production vessels. Requires manual reset after activation and is built for reliable operation in high-pressure environments.
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Highlights
- Indirect high-temperature shutdown; requires manual lever reset before returning to service
- Prevents automatic restart after a high-temperature trip for added safety
- Temperature range -30°F to 400°F (-34°C to 204°C); 30 PSIG max working pressure
- 500 PSIG max sensing unit pressure without thermowell; 4000 PSIG with thermowell
- 304SS sensing element; ductile iron body and bonnet; nitrile elastomers
- Thermowell options in 304SS or carbon steel for 3/4″ and 1″ NPT connections
Application
- High-temperature safety shutoff on heaters, emulsion treaters, and reboilers
- Steam generators, heat exchangers, and salt bath heaters
- Any heated vessel application requiring manual-reset overheat protection
Accessories
Test Valve
Relief Valve Testing / Pressure Isolation
Test valve installed between a pressure vessel and relief valve to allow safe testing without pressurizing the vessel. Isolates the vessel while enabling independent verification of relief valve performance. Available in multiple sizes and materials for reliable use in high-pressure applications.
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Highlights
- Allows pressure relief valve testing without pressurizing the process vessel
- Ball and seat design seals the vessel side during testing; automatic return to service position
- 1000 PSIG maximum working pressure; -20°F to 200°F temperature range
- Available in 1″ x 1″ NPT and 2″ x 2″ NPT configurations
- Carbon steel or stainless steel body; acetal spacer
Application
- Pressure relief valve testing on production vessels, separators, and process equipment
- Any application requiring periodic relief valve verification without vessel depressurization
Drip Pot
Moisture Removal / Gas & Air Systems
Drip pot designed to remove moisture from gas or air streams before entering downstream equipment requiring a dry supply. Utilizes gravity separation to collect liquid contaminants while allowing clean gas to pass through. Available in multiple pressure ratings with NACE-compliant construction for demanding environments.
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Highlights
- Available in 300, 2000, and 6000 PSIG pressure ratings; 1/4″ NPT connections
- NACE MR0175-compliant construction standard on all units
- Fluorocarbon and HSN elastomer options; temperature range -25°F to 300°F
- Ductile iron body (300 PSI) or carbon steel body (2000/6000 PSI)
- Mounting bracket included on 2000 and 6000 PSI units
Application
- Corrosion monitoring systems
- Line sampling and instrument supply protection
- Pneumatic signal supply conditioning for control valve actuators
- Upstream filtration in P71R/B and P72R/B control packages
Weld Neck & Blind Flange Assembly
Vessel Access / Pressure Isolation
Weld neck and blind flange assembly designed to provide a secure access point for vessels and production equipment. Available in multiple pipe sizes & configurations with integrated components for simplified installation and sealing. Rated up to 1500 PSI with configurable materials and sealing options for reliable performance.
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Highlights
- Carbon steel weldneck, hammer nut, and blind flange construction
- Fluorocarbon or Buna-N o-ring seal options
- Acme and standard NPSL thread options
- Optional 2″ NPT threaded center port
- Weldneck lengths: 5″, 6″, and 8″
- Pipe sizes: 3″, 4″, 5″, 6″, and 8″
- Working pressure: 1,500 PSI
- Repair kits available
Application
- Vessel port installations on separators and treaters
- Oil and gas production vessel access and instrumentation ports
- Tank and vessel blind flange service
- Production facilities requiring field-replaceable seal assemblies
- Applications requiring Acme or NPSL threaded hammer union connections