Industrial and Commercial/Boiler/Combustion Pressure Regulation Solutions

RTZ-15/1.7 (67DFR) Type Filter Regulator

◉ Application

This pressure regulator is a high-performance filter-regulator valve (combination of filter and pressure regulator). It is suitable for pressure regulation in control actuators and instrument air supply pipelines, and provides stable pressure reduction for vaporized liquids to pilot-operated controllers and other pneumatic instruments.

◉ Features

• Compact design
• Accurate pressure control
• Large flow capacity
• Internal pressure relief: When the supply pressure is lost, the internal check valve relieves pressure from the outlet port
• Durable construction
• Corrosion-resistant fasteners

◉ Technical Parameters

• Inlet Pressure (P₁): 1 - 17.2 bar
• Outlet Pressure (P₂):
  • 0 - 2.4 bar (0 - 35 psi)
  • 0 - 4.1 bar (0 - 60 psi)
  • 0 - 8.6 bar (0 - 125 psi)
  • 0 - 10.3 bar (0 - 150 psi)
• Pressure Stabilization Precision (A): AC 10
• Shut-off Pressure (Pᵦ): SG 10
• Flow Rate: 50 - 255 Nm³/h (Note: "Nm³/h" = "normal cubic meters per hour", a standard unit for gas flow measurement under standard conditions of 0 °C and 1 standard atmospheric pressure, ensuring consistent flow calculation regardless of temperature/pressure variations)
• Operating Temperature: -29 °C ~ 66 °C
• Nominal Diameter (DN): DN 15×DN 15
  • Connection Type: Threaded connection

Supplementary Notes on Key Terms

1. Filter-Regulator Valve: A integrated device that combines two core functions—filtration (removing impurities, moisture, or particles from the gas to protect downstream instruments) and pressure regulation (reducing inlet pressure to a stable outlet pressure). This dual-function design simplifies pipeline installation and improves system reliability, which is critical for precision pneumatic instruments.
2. Pilot-Operated Controllers: Controllers that use a small "pilot pressure signal" to regulate large main valve pressure. The regulator’s stable pressure supply ensures the pilot controller can accurately adjust the main system, avoiding fluctuations in industrial processes.
3. Internal Pressure Relief with Check Valve: The check valve prevents reverse flow, while the internal relief function releases residual pressure from the outlet when the inlet supply is cut off. This protects downstream instruments/actuators from damage caused by trapped high pressure, enhancing operational safety.
4. Corrosion-Resistant Fasteners: Fasteners (e.g., bolts, nuts) resistant to rust or chemical erosion—this extends the regulator’s service life, especially in environments with moisture or mild corrosive vapors (common in industrial instrument pipelines).