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

Brand :

SMC

Caution

Product Description

A coupler that reduces the amount of liquid dripping when disconnecting the plug.
[Features]
· Female thread type plug.
· Body material: stainless steel (SUS304).
· Seal material: fluoroelastomer (special FKM).
· Available with or without check valve to suit different working conditions.
· Liquid dripping amount: 0.02 to 0.77 cm³ at each removal; aeration amount: 0.1 to 2.7 cm³ at each attachment.
· Non-greased specification (standard).

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℃ (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)

*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.

Characteristics of Models With Check Valve on Both Sides

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.

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

Structural Drawing

Plug structural drawing

KKA series structural drawing

Number	Part Name	Material	Note
1	Plug body	SUS304	Fluorine coating
2	Plug rear body	SUS304	-
3	Plug valve	SUS304	-
4	Valve O-ring	Special FKM	Fluorine coating
5	Plug body O-ring	Special FKM	Fluorine coating
6	Plug valve spring	Equivalent to SUS304	KKA3
6	Plug valve spring	SUS304	KKA4, KKA6, KKA7, KKA8, KKA9

Dimensions: Plug (P)

With Check Valve

With check valve, female thread type dimensional drawing

(Unit: mm)

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

Without Check Valve

Without check valve, female thread type dimensional drawing