part number:	R21-C4-O
connection thread:	G1/2
connection:	G1/2
supply pressure max. [bar]:	21
pressure range [bar]:	0...11
flow rate air [Nl/min]:	5000
Kv [m³/h]:	4,2

Piston-operated regulator with balanced valve design and high-relief flow. Features include a transparent pressure-calibrated, non-rising adjusting dial which can be mounted in any position so the dial face is always visible. Pressure setting in steps is possible.

Media: compressed air
Supply_pressure: max. 21 bar, minimum 1 bar above outlet pressure
Air_consumption: max. 1.4 l/min depending on outlet pressure
Adjustment: The full secondary pressure range can be dialed in less than a 270° turn proportional to handwheel
with scale in bar or psi. This is advantageous if secondary pressure must be changed frequently.

Relieving_function: relieving
Gauge_port: G1/4 on both sides of the body
Mounting_position: any
Temperature_range: 0 °C to 65 °C / 32 °F to 149 °F

Body: zinc die-cast
Piston: acetal
O-ring: NBR/Buna-N
Valve_seat: acetal, brass and NBR/Buna-N

• Delivery of spare parts and industrial equipment throughout the USA by Fedex transport company.
• Flexible payment system accepting bank transfers, MasterCard, VISA, PayPall, App Pay, Google Pay.
• Directly from stock and on order.