How do I adjust and lock the flow on the MRF NMB Brass Pneumatic Throttle Valve, COMPACT "N" Series for bidirectional control?

To adjust and lock the flow on the MRF NMB Brass Pneumatic Throttle Valve, COMPACT "N" Series for bidirectional control: 1. Ensure system pressure is within limits (≤10 bar) and lines are depressurized if required for safety. 2. Connect the pneumatic hoses using the plug-in connection. 3. For adjustment, turn the control knob (or use a screwdriver if provided) clockwise to reduce flow or counterclockwise to increase flow. Because the valve is bidirectional, adjust while observing actual flow during both filling and venting to achieve the desired rate in both directions. 4. Fine-tune slowly and monitor system performance and pressure to prevent unintended effects. 5. Once the desired flow is reached, tighten the locking nut to secure the setting and prevent accidental changes during operation. 6. Recheck flow after locking to confirm stable bidirectional regulation. The valve’s robust nickel-plated brass construction and available sizes (M5–1/2") support durable, precise control across -10°C to +70°C.

What maintenance is recommended to ensure long-term performance of the MRF NMB Brass Pneumatic Throttle Valve, COMPACT "N" Series?

To ensure long-term performance of the MRF NMB Brass Pneumatic Throttle Valve, COMPACT "N" Series, follow these maintenance recommendations: - Regular visual inspection: check for external damage, corrosion on the nickel-plated brass body, and secure seating of plug-in connections. - Clean connections and valve surfaces: remove dust, debris and oil residues to prevent contamination of pneumatic circuits and ensure reliable hose coupling. - Inspect and service plug-in fittings: verify that pneumatic hoses connect and release smoothly; replace worn or cracked tubing and seals to avoid leaks. - Leak testing: periodically pressurize the system (up to rated 10 bar) and check for leaks at threads, fittings and around the control knob; tighten or replace components as needed. - Verify adjustment mechanism: operate the control knob or screwdriver slot through full range to ensure smooth action; clean and lightly lubricate moving parts if stiff, using compatible pneumatic-grade lubricants. - Check locking nut: ensure the locking nut securely fixes the set flow; retighten to specification to prevent accidental setting changes. - Monitor operating conditions: avoid exposure beyond -10°C to +70°C and prevent pressure spikes above 10 bar to preserve seals and internal components. - Scheduled replacement: replace seals, O-rings or worn internals proactively based on operating hours and environmental severity to maintain precise bidirectional flow control. Following these steps will help maintain durability, prevent leaks, and preserve the precise regulation and reliability of the MRF NMB Brass Pneumatic Throttle Valve, COMPACT "N" Series.

MRF NMB Brass Pneumatic Throttle Valve, COMPACT “N” Series

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Additional information

Material	B – brass (bronze)

The MRF NMB Compact “N” series throttling valves are designed for precise and reliable bidirectional flow control, ensuring smooth regulation of compressed air both during filling and venting in pneumatic systems. Their robust nickel-plated brass construction guarantees durability and resistance to wear, while the compact design allows easy integration into various industrial applications. Thanks to the practical plug-in connection, pneumatic hoses can be quickly connected or removed, reducing downtime and simplifying maintenance. Adjustment is intuitive and flexible, performed either with a control knob or a screwdriver, and the locking nut provides secure fixation of the selected setting, preventing accidental changes during operation. Available in sizes M5, 1/8″, 1/4″, 3/8″, and 1/2″, the valves operate reliably under pressures up to 10 bar and within a wide temperature range from -10°C to +70°C, making them a versatile solution for demanding environments. Combining precision, ease of use, and long-lasting performance, the MRF NMB Compact “N” series is an excellent choice for optimizing pneumatic flow control in modern industrial systems.

List of product variants

Article number	Product variant name	Nominal inner diameter	Working pressure [bar]
MW-9031201B	MRF NMB throttling valve, 4 mm hose, GZ M5	-	10
MW-9031202B	MRF NMB throttling valve, 4 mm hose, GZ BSP 1/8"	-	10
MW-9031205B	MRF NMB throttling valve, 6 mm hose, GZ M5	-	10
MW-9031206B	MRF NMB throttling valve, 6 mm hose, GZ BSP 1/8"	-	10
MW-9031207B	MRF NMB throttling valve, 6 mm hose, GZ BSP 1/4"	-	10
MW-9031208B	MRF NMB throttling valve, 8 mm hose, GZ BSP 1/8"	-	10
MW-9031209B	MRF NMB throttling valve, 8 mm hose, GZ BSP 1/4"	-	10
MW-9031211B	MRF NMB throttling valve, 10 mm hose, GZ BSP 1/4"	-	10

The MRF NMB Compact “N” series throttling valves are designed for precise and reliable bidirectional flow control, ensuring smooth regulation of compressed air both during filling and venting in pneumatic systems. Their robust nickel-plated brass construction guarantees durability and resistance to wear, while the compact design allows easy integration into various industrial applications. Thanks to the practical plug-in connection, pneumatic hoses can be quickly connected or removed, reducing downtime and simplifying maintenance. Adjustment is intuitive and flexible, performed either with a control knob or a screwdriver, and the locking nut provides secure fixation of the selected setting, preventing accidental changes during operation. Available in sizes M5, 1/8″, 1/4″, 3/8″, and 1/2″, the valves operate reliably under pressures up to 10 bar and within a wide temperature range from -10°C to +70°C, making them a versatile solution for demanding environments. Combining precision, ease of use, and long-lasting performance, the MRF NMB Compact “N” series is an excellent choice for optimizing pneumatic flow control in modern industrial systems.