Type	Standard	Joint Type	Female Threaded Tapped
Male/Female	Plug	Body Material	SUS304
Seal Material	[NBR] 00011	Applicable Fluid	Water / Air
Operating Environment, Applications	Standard	Operating Temperature Range(°C)	-5～150
Operating Pressure Range(MPa)	-0.1～1	Size of Body	1/8
Pipe Connection Bore Dia.	Rc1/8	With or Without Check Valve	Y

S Coupler KKA Series Stainless Steel Type Plug (P) Female Thread Type Specifications

Without, check valve, plug, female thread type external appearance

JIS symbols for the KKA series

Working Fluid	Water, air
Operating Pressure Range_*1	KKA3: -100 kPa to 1 MPa KKA4, KKA6, KKA7, KKA8, KKA9: 0 to 1 MPa
Guaranteed Proof Pressure	10 MPa
Ambient Temperature and Working Fluid Temperature Range	-5 to 150°C (no freezing) *Cannot be used for steam.
Non-greased Specification	Does not use grease. (Rubber and metal sliding parts: fluorine coating)
Material	Metal parts: SUS304; rubber parts: fluoroelastomer (special FKM)
Seal	Includes male thread sealant

*1: Do not use with a leak tester or for vacuum retention as zero leakage cannot be guaranteed.

Performance

Plug connection method: single-action connection and release
Check valve: check valve built-in to both plug and socket sides, without check valve

*The KKA series cannot be connected to the KK series or the KKH series.

Body Size	Liquid Dripping Amount (cm³ per instance)	Aeration Amount (cm³ per instance)
KKA3	0.02	0.1
KKA4	0.04	0.1
KKA6	0.06	0.2
KKA7	0.14	0.5
KKA8	0.27	0.9
KKA9	0.77	2.7

"Liquid dripping amount" refers to the amount of internal water that is lost when the plug socket is disengaged.
"Aeration amount" refers to the amount of external air that is entrained when the plug and socket are connected.

Structural Drawing

Plug structural drawing

KKA series structural drawing

Flow Rate Characteristics

Air

Plug: with check valve / socket: with check valve

Plug: without check valve / socket: with check valve

Plug: with check valve / socket: with check valve

Plug: without check valve / socket: without check valve

Body Size	Model	T Connection Port Diameter	H Width Across Flats	L₁	L₂	Minimum Hole Diameter	Effective Cross-sectional Area mm²	Weight g
1/8	KKA3P-01F	Rc 1/8	14	36.0	16.0	5.6	17.4	20.2
	KKA3P-02F	Rc 1/4	17	39.6				31.8
	KKA3P-03F	Rc 3/8	19	40.4				35.8
1/4	KKA4P-02F	Rc 1/4	17	43.4	18.9	6.9	26.4	36.1
	KKA4P-03F	Rc 3/8	19	44.4				40.2
	KKA4P-04F	Rc 1/2	24	48.6				69.7
1/2	KKA6P-03F	Rc 3/8		48.7	20.4	10.0	54.2	84.1
	KKA6P-04F	Rc 1/2		52.9				79.7
	KKA6P-06F	Rc 3/4	30	54.6				123.8
3/4	KKA7P-04F	Rc 1/2	32	67.7	27.6	13.5	99.6	217.1
	KKA7P-06F	Rc 3/4	32	69.4				196.8
	KKA7P-10F	Rc 1	41	72.4				325.9
1	KKA8P-06F	Rc 3/4		82.0	35.6	17.5	168.3	420.5
	KKA8P-10F	Rc 1		85.0				391.3
	KKA8P-12F	Rc1 1/4	50	87.3				552.8
1 1/4	KKA9P-10F	Rc 1	55	107.8	49.1	24.6	332.1	986.9
	KKA9P-12F	Rc1 1/4		110.1				925.6
	KKA9P-14F	Rc1 1/2		110.1				848.2

KKA Series SS316 KKA3P-01F Type Plug (P) Female Thread Type S Coupler

Pneumatic Pipe Fittings