Threaded Check Valves - Series RK, RB

*PRODUCT IMAGE IS REPRESENTATIVE PROVIDED BY THE MANUFACTURER. DO NOT MAKE BUYING DECISIONS SOLEY BASED ON THE IMAGE. PLEASE VERIFY SPECIFICATIONS MEET YOUR REQUIREMENTS.

Parker's very robust check valves series RK and RB ensure a reliable operation even at high operating pressures (up to 700 bar). They are designed to be screwed into simple, threaded cavities. The connection is O-ring sealed on the 118° shoulder in the mounting cavity. The valve body is supplied as a unit, with a spring loaded, hardened and polished semisphere of stainless bearing steel inside. The seat is also hardened and ground.

Markets:
• Industrial

Features/Benefits:
• Proven, solid design - very good wear behaviour
• Zero leakage in closed position - ensures reliable operation
• Short delivery time - no warehousing necessary
• Two variations:
- RK: mounted in the blocked direction
- RB: mounted in open flow direction

Applications:
• Suitable for general hydraulic applications

Sort by

Display per page

SKU	Availability	Price	Weight	Maximum Operating Temperature	Actuation Type	Maximum Flow Rate	Body Material	Product Series	Seal Material	Connection Type	Connection Size	Configuration	Maximum Operating Pressure	Minimum Operating Temperature	Mounting Type	Cracking Pressure	Mounting Position	Flow Direction	Division	Thread Size	Configuration	Maximum Flow Rate
RB1	Backordered	POR	5 g	60 °C	Mechanical	20 L/min	Steel	Check Valve	NBR	Thread (DIN ISO 228/1)	G1/4A	Mounted in the open flow direction	700 bar	-20 °C	Screw-in mounting	0.15 bar	Unrestricted	n/a	Industrial Systems Division Europe	G1/4A	Mounted in the open flow direction	20 l/min
RB2	Backordered	POR	15 g	60 °C	Mechanical	50 L/min	Steel	Check Valve	NBR	Thread (DIN ISO 228/1)	G3/8A	Mounted in the open flow direction	700 bar	-20 °C	Screw-in mounting	0.07 bar	Unrestricted	n/a	Industrial Systems Division Europe	G3/8A	Mounted in the open flow direction	50 l/min
RB3	Backordered	POR	20 g	60 °C	Mechanical	80 L/min	Steel	Check Valve	NBR	Thread (DIN ISO 228/1)	G1/2A	Mounted in the open flow direction	500 bar	-20 °C	Screw-in mounting	0.17 bar	Unrestricted	n/a	Industrial Systems Division Europe	G1/2A	Mounted in the open flow direction	80 l/min
RK0	Backordered	POR	5 g	60 °C	Mechanical	10 L/min	Steel	Check Valve	NBR	Thread (DIN ISO 228/1)	G1/8A	Mounted in the blocked direction	700 bar	-20 °C	Screw-in mounting	0.15 bar	Unrestricted	n/a	Industrial Systems Division Europe	G1/8A	Mounted in the blocked direction	10 l/min
RK1	Backordered	POR	5 g	60 °C	Mechanical	20 L/min	Steel	Check Valve	NBR	Thread (DIN ISO 228/1)	G1/4A	Mounted in the blocked direction	700 bar	-20 °C	Screw-in mounting	0.18 bar	Unrestricted	n/a	Industrial Systems Division Europe	G1/4A	Mounted in the blocked direction	20 l/min
RK2	Backordered	POR	15 g	60 °C	Mechanical	50 L/min	Steel	Check Valve	NBR	Thread (DIN ISO 228/1)	G3/8A	Mounted in the blocked direction	700 bar	-20 °C	Screw-in mounting	0.2 bar	Unrestricted	n/a	Industrial Systems Division Europe	G3/8A	Mounted in the blocked direction	50 l/min
RK3	Backordered	POR	20 g	60 °C	Mechanical	80 L/min	Steel	Check Valve	NBR	Thread (DIN ISO 228/1)	G1/2A	Mounted in the blocked direction	500 bar	-20 °C	Screw-in mounting	0.25 bar	Unrestricted	n/a	Industrial Systems Division Europe	G1/2A	Mounted in the blocked direction	80 l/min

Threaded Check Valves - Series RK, RB

Interchange Lookup