Welker Regulators

HR Heated Regulator

The Welker HR Heated Instrument Regulator is a single-stage, spring-loaded, electrically heated pressure reducing valve designed to provide an analytical system with a conditioned gas sample stream at a safe output pressure and temperature.

IRA-4SS

The Welker IRA-4SS Probe Regulator is designed to regulate a gas sample stream to an analyzer without interrupting pipeline flow. With AI Control™, the probe automatically inserts and retracts using pipeline pressure.

IRD-4

The Welker Original IRD Probe Regulator delivers a continuous supply of representative samples to an analyzer at the appropriate pressure for real-time natural gas analysis of high-volume lines.

ISD

Powering and protecting your pneumatic instruments just got easier thanks to the spring-loaded Welker I-Series Instrument Regulators. The ISD model reduces high-pressure filtered gas or air to a lower outlet pressure safe for your downstream instrumentation, helping prevent costly damage and interruptions to operation.

IBR

The IBR model in Welker’s I-Series Instrument Regulators is a standalone, spring-loaded, piston-sensing back-pressure regulator suitable for controlling gases and low-viscosity liquid products. By controlling its inlet pressure, the IBR helps to balance system pressure and product flow.

ISPE

The ISPE model in Welker’s I-Series Instrument Regulators is a cost-effective, standalone piston-sensing instrument regulator suitable for regulating air and light gases, such as hydrogen.

With global and industrial decarbonization goals, the development and deployment of hydrogen and fuel cell technologies are growing in importance. Welker’s ISPE Instrument Regulator can be used across the hydrogen value chain to reduce the pressure of the hydrogen gas to a lower outlet pressure safe for the downstream equipment in your application, helping prevent costly damage and interruptions to operation.

FIR-1

The Welker FIR-1 Filter / Instrument Regulator is designed to filter and provide regulation of an instrument pneumatic supply. It is intended for use as part of instrument packages.

The regulator of the FIR-1 is non-relieving. Welker recommends that a relief valve, such as the Welker RV-1 or RV-3 series relief valves, be installed downstream of the FIR-1.

IR-1, IR-2, IR-4, IR-6

IR-TP

• Output range 20-200 psig (1.4-13.8 bar)
• Piston design for higher-output pressures
• 316 stainless steel construction
• 5,000 psig (345 bar) maximum inlet pressure
• Teflon® seat (Kel-F® seat optional)
• ¼” NPT ports standard
• CV .092 (downstream relief required)

IR-1T

• Diaphragm design for increased low-pressure sensitivity
• Spring range: 0-25 psig (0-1.7 bar) 0-50 psig (0-3.4 bar) 20-100 psig (1.4-6.9 bar)
• Available in high-strength aluminum (7075-T6) or 316 stainless steel
• 3,600 psig (248 bar) maximum inlet pressure
• Teflon® seat (Kel-F® seat optional)
• ¼”NPT ports standard
• CV .092 (downstream relief required)

IR-2KP

• Output range 100-500 psig (6.9-34.4 bar)
• Piston design for higher-output pressures
• 316 stainless steel construction
• 5,000 psig (345 bar) maximum inlet pressure
• Kel-F® seat
• ¼” NPT ports standard
• CV .092 (downstream relief required)

IR-4

• Diaphragm design for increased low-pressure sensitivity
• Spring range: 0-25 psig (0-1.7 bar) 0-50 psig (0-3.4 bar) 20-100 psig (1.4-6.9 bar)
• Available in high-strength aluminum (7075-T6) or 316 stainless steel
• 3,600 psig (248 bar) maximum inlet pressure
• Teflon® seat (Kel-F® seat optional)
• ¼” NPT ports standard
• CV .138 (downstream relief required)

IR-6KP

• Output range: 250-1,500 psig (17-103 bar)
• Special piston design for higher output pressures
• 316 stainless steel construction
• 5,000 psig (345 bar) maximum inlet pressure
• Kel-F® seat
• ¼” NPT ports standard
• CV .092 (downstream relief required)

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