The RTZ1-50/0.4(0.8)E(K)Q Series Gas Pressure Regulator is a critical component in modern gas distribution networks, ensuring stable and safe pressure regulation for non-corrosive gases. This regulator combines innovative engineering with robust safety mechanisms, making it a reliable solution for industrial and commercial applications. 
Engineered with a geared lever structure design, the RTZ1-50/0.4(0.8)E(K)Q series is equipped with a built-in overpressure safety cut-off and safety relief device. This design eliminates the need for additional safety valves, streamlining system complexity and reducing maintenance costs. The regulator is ideal for pressure regulation and stabilization in medium and low-pressure gas networks.

The RTZ1-50/0.4(0.8)E(K)Q series achieves pressure regulation accuracy up to AC2.5, ensuring consistent output pressure even under fluctuating input conditions. This precision is critical for applications requiring stable gas flow, such as natural gas distribution and industrial combustion systems.
With a built-in safety cut-off device and safety relief device, the regulator automatically responds to overpressure scenarios. These mechanisms operate with high accuracy and rapid response times, eliminating the need for external safety valves. This feature is particularly important for compliance with NIST standards on pressure equipment safety (NIST Technical Note 1582).
Designed for non-corrosive, pre-filtered gases, the RTZ1-50/0.4(0.8)E(K)Q series is compatible with natural gas, coal gas, and liquefied petroleum gas (LPG). Its adaptability makes it suitable for pressure regulating stations, gas supply systems, and industrial gas pipelines.
The regulator's simple structure allows for online maintenance, minimizing downtime. It can be integrated into box-type or cabinet-type pressure regulating equipment, enhancing system flexibility. The flange connection (PN1.6MPa, HG/T20592-2009) ensures secure and leak-proof installation.
| Parameter | Specification |
|---|---|
| Inlet Pressure (P1) | 0.02–0.4 (0.8) MPa |
| Outlet Pressure (P2) | 1–30 KPa, 30–150 KPa |
| Pressure Regulation Accuracy | AC2.5 |
| Closing Pressure Grade | SG5 |
| Cutting Accuracy Grade | AC5 |
| Operating Temperature | -20°C to +60°C |
| Pass-Through Diameter | DN50 |
| Connection Mode | Flange Connection (PN1.6MPa) |
| Model | Engineering Pass-Through (mm) | L (mm) | H (mm) | H1 (mm) | Connecting Flange |
|---|---|---|---|---|---|
| RTZ-50/0.4(0.8)E(K)Q | DN50 | 190 | 635 | 196 | PN 1.6MPa HG/T20592-2009 |
| Inlet Pressure (MPa) | Export Pressure (KPa) | 3 | 10 | 20 | 30 | 50 | 100 | 150 |
|---|---|---|---|---|---|---|---|---|
| 0.05 | 160 | 230 | 210 | 200 | ||||
| 0.10 | 200 | 450 | 430 | 430 | 210 | |||
| 0.15 | 250 | 600 | 580 | 520 | 280 | 220 | ||
| 0.20 | 300 | 750 | 720 | 680 | 570 | 490 | 420 | |
| 0.30 | 400 | 980 | 950 | 900 | 840 | 780 | 730 | |
| 0.40 | 500 | 1120 | 1080 | 1050 | 960 | 900 | 820 |
The RTZ1-50/0.4(0.8)E(K)Q series is widely used in gas distribution networks, industrial gas systems, and commercial gas supply. It is specifically designed for natural gas, coal gas, and liquefied petroleum gas (LPG), which are non-corrosive and pre-filtered. The regulator's ability to handle medium and low-pressure gases makes it ideal for residential and industrial applications.

Founded with a commitment to innovation and quality, Hebei Ouyinuo Gas Equipment Co., Ltd. specializes in manufacturing gas pressure regulators and pressure regulating equipment. The company adheres to GB 27790–2020 standards for city gas pressure regulators, ensuring compliance with national safety and performance requirements. With a focus on customer satisfaction, Hebei Ouyinuo provides reliable solutions for gas distribution systems worldwide.
The RTZ1-50/0.4(0.8)E(K)Q Series Gas Pressure Regulator exemplifies the balance between precision engineering and robust safety features. Its high regulation accuracy, integrated safety mechanisms, and versatile applications make it a preferred choice for gas distribution systems. For more information, visit Hebei Ouyinuo Gas Equipment Co., Ltd..
NIST. (n.d.). National Institute of Standards and Technology. Retrieved from https://www.nist.gov/
GB 27790–2020. (2020). City Gas Pressure Regulators. Beijing: China Standards Press.