**Download the Instruction Manual – Please Visit Our Website: www.zuoyuansmart.com**
**APPLICATION**
The SP21M Pressure Regulator is a direct-operated, internally-set pilot control pressure regulator designed for downstream pressure control. It can maintain pressures ranging from 20 kPa to 900 kPa. The operating temperature range spans from -48°C to 120°C, making it suitable for a wide variety of industrial applications.
**MODEL SELECTION**
Selecting the right model depends on your specific application requirements, including pressure range, flow capacity, and environmental conditions. Our team is here to help you choose the most appropriate model for your system.
**PRODUCT FEATURES**
- **Compact Structure**: The embedded spring design ensures a compact and well-protected construction, ideal for space-constrained installations.
- **Easy Pressure Regulation**: A screw adjustment mechanism allows for quick and convenient pressure setting, improving operational efficiency.
- **High Precision**: The SP21M is engineered for high-pressure control with a fixed net difference spring action, ensuring minimal deviation in control pressure. This results in highly accurate regulation.
- **High Pressure Difference Tolerance**: The balanced main valve plug enables the regulator to handle significant pressure differences without performance degradation.
- **Soft Sealing Design**: The soft-seal valve plug provides excellent shut-off capability, reducing leakage and ensuring tight sealing.
- **Stable Control**: The independent setting regulator and main control valve work together without interference, offering more stable and reliable performance.
- **Overload Safety**: The SP21M includes an overload protection mechanism that can safely withstand pressures up to several times the maximum rated pressure, preventing damage during unexpected overloads.
- **Built-in Pressure Gauge**: A standard pressure gauge is included, simplifying installation, commissioning, and monitoring.
- **Easy Maintenance**: All components are designed for easy access and maintenance. The top-mounted push-down design allows inspection and servicing without special tools. The central bonnet alignment and sufficient internal clearance ensure smooth operation and ease of replacement.
- **Universal Parts**: The SP21M shares a high degree of part compatibility with other self-operated regulators in our product line, reducing spare parts inventory and increasing convenience.
**PRESSURE SAMPLING POINT**
Ensure accurate pressure measurement by installing the sampling point at the correct location according to the manufacturer’s guidelines.
**SPECIFICATION SERIES**
- **Body Size (Flanged Connection)**: DN20 (3/4"), DN40 (1½"), DN50 (2"), DN65 (2½"), DN80 (3"), DN100 (4"), DN150 (6"), DN200 (8")
- **Pressure Class**: PN16, PN40, PN64; ANSI 150LB, 300LB, 600LB (custom options available)
- **Operating Temperature**: -54.4°F (-48°C) to 248°F (120°C)
- **Flow Factor (Cv/Kv)**: Cv = 1.167 × Kv
- **Leakage Class**: VI (Soft-Sealing)
- **Flow Characteristics**: L (Standard), EQ% (Customized)
**PRECISION & DIFFERENCE PRESSURE & SPRING RANGE & ACTUATOR CONFIGURATION**
Due to the extensive range of configurations and specifications, please contact us for detailed information tailored to your needs.
**Note**: The theoretical precision indicates the expected pressure deviation under 10–50% travel with a constant pressure difference. In real-world applications, this may vary depending on actual pressure fluctuations and flow conditions. The actual precision is determined by the process parameters of your system.
**DIMENSION**
For detailed dimensions and installation requirements, refer to the accompanying technical drawings or contact our support team for assistance.
Whether you're looking for a reliable pressure control solution or need guidance on selecting the right model, Zuoyuan Smart is here to help. Contact us today for expert advice and support.
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