KQ2U / KQ2UD Series Y-Type Multi-Port Push-in Fittings
SOLH KQ2U and KQ2UD are Y-style multi-port push-in manifold connectors within the KQ2 pneumatic fitting family, direct replacement for SMC KQ2U / KQ2UD. KQ2U is a 1-in 2-out Y splitter, and KQ2UD is a compact 1-in 4-out air distributor. Available in male thread, equal-diameter and reducing versions. Constructed with PBT body and NBR sealing, these quick push fittings support both compressed air and vacuum systems. Widely used for centralized air supply for vacuum cup arrays, multi-cylinder automation fixtures, 3C and packaging machinery.
Brand: SOLH by Richge Technology | SMC KQ2U / KQ2UD Equivalent Y Multi-outlet One-Touch Fitting
1. Product Overview
KQ2U is Y-type 1-in 2-out push-in splitter; KQ2UD is Y-type 1-in 4-out push-in manifold. Both belong to SOLH KQ2 pneumatic one-touch fitting series. Constructed with PBT body and nickel-plated brass male thread. Direct plug-and-play for PU air tubing, PTFE tape not required. Designed for 1-to-2 / 1-to-4 air circuit splitting, fully interchangeable with SMC KQ2U / KQ2UD. Widely adopted in automation equipment, vacuum suction cups and pneumatic actuator air distribution. KQ2U: 1 inlet, 2 outlets (Y-shape 1 to 2 split) KQ2UD: 1 inlet, 4 outlets (Y-shape 1 to 4 split)
2. Model Naming Rules
2.1 KQ2U (1-in 2-out Y splitter)
1.Male thread version KQ2Uxx-xxS Example: KQ2U06-02S KQ2U: Y-type 1-in 2-out fitting 06: Tube OD of outlet ports Φ6mm 02S: Male taper thread R1/4 (S = R taper male thread) Thread code: 01S=R18, 02S=R1/4, 03S=R3/8, 04S=R1/2 2.Straight equal-diameter tube version KQ2Uxx-00 Example: KQ2U08-00 Inlet and two outlets share identical tube OD, all Φ8mm 3.Straight reducing version KQ2Uxx-yy Example: KQ2U04-06 Two outlets Φ4; main inlet Φ6, different diameter reducing split 4. Barbed plug version KQ2Uxx-99 Plastic rigid plug shank at bottom, inserts into female push-in port for 1-in 2-out split
2.2 KQ2UD (1-in 4-out Y manifold)
1. Male thread version KQ2UDxx-xxS Example: KQ2UD08-03S R38 male thread inlet, four outlets for Φ8 tubing 2. Reducing tube version KQ2UDxx-yy Example: KQ2UD04-06 Four outlets Φ4, main inlet Φ6, multi-port reducing distribution
3. Specification Summary Table
3.1 KQ2U (1-in 2-out Y splitter)
Type
Model Range
Description
Male Thread 1-to-2
KQ2U23-01S ~ KQ2U16-04S
R male thread air inlet, two equal tubing outlets, tube OD Φ3.2~Φ16
Straight Equal Diameter
KQ2U02-00 ~ KQ2U16-00
Inlet & two outlets same diameter, all push-in tube connection
Straight Reducing
KQ2U02-23 ~ KQ2U12-16
Small outlet tubing, large inlet tubing, different diameter split
Plug Shank Type
KQ2U23-99 ~ KQ2U16-99
Bottom plastic plug shank, insert into female push-in port for 1-to-2 split
3.2 KQ2UD (1-in 4-out Y manifold)
Type
Model Range
Description
Male Thread 1-to-4
KQ2UD04-01S ~ KQ2UD10-04S
R male thread air inlet, four equal tubing outlets, tube OD Φ4~Φ10
Push-in Reducing
KQ2UD04-00 ~ KQ2UD10-12
Push-in style, inlet and four outlets support equal / different diameters
4. General Technical Specifications
Item
Parameter
Compatible Tubing
PU / PA / PE pneumatic flexible hose
Operating Pressure
0 ~ 1.0 MPa
Vacuum Compatibility
Suitable for vacuum circuits (vacuum generator & suction cup branch)
Operating Temperature
0 ~ 60℃
Body Material
PBT engineering plastic
Thread Material
Nickel-plated brass
Seal Material
NBR nitrile rubber
Installation Method
Push-in quick connection; press release collar to pull out tubing
5. Product Features
•Fast Push-in Assembly: Tubing inserted for instant sealing. Press white release collar to remove tube, greatly improve assembly efficiency.
•Multi-path Air Distribution: KQ2U for 1-to-2 split, KQ2UD for 1-to-4 split. Centralized air source distribution to simplify air routing.
•Reducing Option Available: Equal and reducing diameter versions for connection of different tube sizes.
•Reliable Thread Sealing: Nickel-plated brass male thread with high corrosion resistance and mechanical strength.
•Compact Size: Small footprint for confined mounting space, widely used in manipulators, jigs and suction cup modules.
6. Typical Applications
•Vacuum cup array splitting (multiple suction cups share single vacuum source)
•Multi-cylinder air supply for automation fixtures
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