21KL: RECTUS GmbH: Quick Coupling Division Europe

Dry-Break

Nominal Diameter
5 = 20 mm²

RECTUS Series
21KL

Chart

Technical Description

Mini industrial coupling, internationally the most common
profile for this nominal diameter, in double shut-off design. Above average flow performance for liquid and gaseous media. Large band width in materials and valve variants.

Advantages

Single handed operation. Small dimensions. Minimum (hardly noticeable) leakage occurs when disconnecting. Air is not trapped in during the connecting process.

Working Pressure

PB = 8 bar, maximum static
working pressure with safety
factor of 4 to 1.

Working Temperature*

-20°C up to +100°C (NBR)
-40°C up to +120/150°C (EPDM)
-15°C up to +200°C (FKM)
0°C up to +316°C (FFKM)
depending on the medium.

*At a temperature below
0°C and above +316°C special
seals are available on request.

Material Coupling	Standard	Nickel Plated
Back Body Valve Body Sleeve Valve Spring and Locking Ring Locking Balls Seals Inner Sleeve Seal Bonnet	Brass Brass Brass Brass AISI 301 AISI 420 NBR Brass Brass	Brass, Nickel Plated Brass, Nickel Plated Brass, Nickel Plated Brass AISI 301 AISI 420 NBR Brass Brass
Plug
Plug Profile Back Body Valve Spring Seal	Brass Brass Brass AISI 301 NBR	Brass, Nickel Plated Brass, Nickel Plated Brass AISI 301 NBR

Couplings

	Connection A	Hex SW	L mm	D mm	L1 mm	L2 mm	Hex1 SW	B mm	G mm	Version	Part Number
Male Thread	G 1/8	14	36	16	7					Standard	21KL AW10 MPX
	G 1/8	14	36	16	7					Nickel Plated	21KL AW10 MPN
	G 1/4	17	38	16	9					Standard	21KL AW13 MPX
	G 1/4	17	38	16	9					Nickel Plated	21KL AW13 MPN
	G 3/8	19	38	16	9					Standard	21KL AW17 MPX
	G 3/8	19	38	16	9					Nickel Plated	21KL AW17 MPN
	M 12 x 1,5	17	38	16	9					Standard	21KL AD12 MPX
	M 12 x 1,5	17	38	16	9					Nickel Plated	21KL AD12 MPN
	M 14 x 1,5	17	38	16	9					Standard	21KL AD14 MPX
	M 14 x 1,5	17	38	16	9					Nickel Plated	21KL AD14 MPN
Female Thread	G 1/8	14	36	16	9					Standard	21KL IW10 MPX
	G 1/8	14	36	16	9					Nickel Plated	21KL IW10 MPN
	G 1/4	17	38	16	9					Standard	21KL IW13 MPX
	G 1/4	17	38	16	9					Nickel Plated	21KL IW13 MPN
	G 3/8	19	38	16	9					Standard	21KL IW17 MPX
	G 3/8	19	38	16	9					Nickel Plated	21KL IW17 MPN
	M 12 x 1,5	17	38	16	6					Standard	21KL IM12 MPX
	M 12 x 1,5	17	38	16	6					Nickel Plated	21KL IM12 MPN
	M 14 x 1,5	17	38	16	6					Standard	21KL IM14 MPX
	M 14 x 1,5	17	38	16	6					Nickel Plated	21KL IM14 MPN
Plastic Hose Connection with Spring Guard	4 x 6 mm	14	125	16	7	6			M 10 x 1	Standard	21KL KK06 MPX
	4 x 6 mm	14	125	16	7	6			M 10 x 1	Nickel Plated	21KL KK06 MPN
	6 x 8 mm	14	130	16	7	6			M 10 x 1	Standard	21KL KK08 MPX
	6 x 8 mm	14	130	16	7	6			M 10 x 1	Nickel Plated	21KL KK08 MPN
Plastic Hose Connection	4 x 6 mm	14	42	16	7	6			M 10 x 1	Standard	21KL KO06 MPX
	4 x 6 mm	14	42	16	7	6			M 10 x 1	Nickel Plated	21KL KO06 MPN
	6 x 8 mm	14	42	16	7	6			M 12 x 1	Standard	21KL KO08 MPX
	6 x 8 mm	14	42	16	7	6			M 12 x 1	Nickel Plated	21KL KO08 MPN
Panel Mount, Plastic Hose Connection	4 x 6 mm	14	54	16	7	18	14	4	M 10 x 1	Standard	21KL KS06 MPX
	4 x 6 mm	14	54	16	7	18	14	4	M 10 x 1	Nickel Plated	21KL KS06 MPN
	6 x 8 mm	17	54	16	7	18	17	4	M 12 x 1	Standard	21KL KS08 MPX
	6 x 8 mm	17	54	16	7	18	17	4	M 12 x 1	Nickel Plated	21KL KS08 MPN
Hose Barb	4 mm	14	46	16	17					Standard	21KL TF04 MPX
	4 mm	14	46	16	17					Nickel Plated	21KL TF04 MPN
	6 mm	14	46	16	17					Standard	21KL TF06 MPX
	6 mm	14	46	16	17					Nickel Plated	21KL TF06 MPN
	8 mm	14	46	16	17					Standard	21KL TF08 MPX
	8 mm	14	46	16	17					Nickel Plated	21KL TF08 MPN
	9 mm	14	46	16	17					Standard	21KL TF09 MPX
	9 mm	14	46	16	17					Nickel Plated	21KL TF09 MPN
	10 mm	14	46	16	17					Standard	21KL TF10 MPX
	10 mm	14	46	16	17					Nickel Plated	21KL TF10 MPN
	6 mm Parker	14	46	16	17					Standard	21KL TP06 MPX
	6 mm Parker	14	46	16	17					Nickel Plated	21KL TP06 MPN
Panel Mount, Hose Barb	4 mm	14	60	16	17	14	14	4	M 10 x 1	Standard	21KL TS04 MPX
	4 mm	14	60	16	17	14	14	4	M 10 x 1	Nickel Plated	21KL TS04 MPN
	5 mm	17	60	16	17	14	17	4	M 12 x 1	Standard	21KL TS05 MPX
	5 mm	17	60	16	17	14	17	4	M 12 x 1	Nickel Plated	21KL TS05 MPN
	6 mm	17	60	16	17	14	17	4	M 12 x 1	Standard	21KL TS06 MPX
	6 mm	17	60	16	17	14	17	4	M 12 x 1	Nickel Plated	21KL TS06 MPN
	8 mm	17	60	16	17	14	17	4	M 12 x 1	Standard	21KL TS08 MPX
	8 mm	17	60	16	17	14	17	4	M 12 x 1	Nickel Plated	21KL TS08 MPN
	10 mm	17	60	16	17	14	19	4	M 12 x 1	Standard	21KL TS10 MPX
	10 mm	17	60	16	17	14	19	4	M 12 x 1	Nickel Plated	21KL TS10 MPN

Valved Plugs

	Connection A	Hex SW	L mm	L1 mm	Version	Part Number
Male Thread	G 1/8	14	40	7	Standard	21SL AW10 MPX
	G 1/8	14	40	7	Nickel Plated	21SL AW10 MPN
	G 1/4	17	42	9	Standard	21SL AW13 MPX
	G 1/4	17	42	9	Nickel Plated	21SL AW13 MPN
	M 12 x 1,5	17	43	10	Standard	21SL AD12 MPX
	M 12 x 1,5	17	43	10	Nickel Plated	21SL AD12 MPN
Female Thread	G 1/8	14	40	7	Standard	21SL IW10 MPX
	G 1/8	14	40	7	Nickel Plated	21SL IW10 MPN
	G 1/4	17	42	7	Standard	21SL IW13 MPX
	G 1/4	17	42	7	Nickel Plated	21SL IW13 MPN
	G 3/8	19	42	7	Standard	21SL IW17 MPX
	G 3/8	19	42	7	Nickel Plated	21SL IW17 MPN
	M 12 x 1,5	17	42	7	Standard	21SL IM12 MPX
	M 12 x 1,5	17	42	7	Nickel Plated	21SL IM12 MPN
	M 14 x 1,5	17	42	7	Standard	21SL IM14 MPX
	M 14 x 1,5	17	42	7	Nickel Plated	21SL IM14 MPN

Valved Plugs

	Connection A	Hex SW	L mm	L1 mm	L2 mm	Hex1 SW	B mm	G mm	Version	Part Number
Plastic Hose Connection with Spring Guard	4 x 6 mm	14	130	7	6			M 10 x 1	Standard	21SL KK06 MPX
	4 x 6 mm	14	130	7	6			M 10 x 1	Nickel Plated	21SL KK06 MPN
	6 x 8 mm	14	135	7	6			M 12 x 1	Standard	21SL KK08 MPX
	6 x 8 mm	14	135	7	6			M 12 x 1	Nickel Plated	21SL KK08 MPN
Plastic Hose Connection	4 x 6 mm	14	46	7	6			M 10 x 1	Standard	21SL KO06 MPX
	4 x 6 mm	14	46	7	6			M 10 x 1	Nickel Plated	21SL KO06 MPN
	6 x 8 mm	14	46	7	6			M 12 x 1	Standard	21SL KO08 MPX
	6 x 8 mm	14	46	7	6			M 12 x 1	Nickel Plated	21SL KO08 MPN
Panel Mount, Plastic Hose Connection	6 x 8 mm	17	58	7	18	17	4	M 12 x 1	Standard	21SL KS08 MPX
	6 x 8 mm	17	58	7	18	17	4	M 12 x 1	Nickel Plated	21SL KS08 MPN


Hose Barb	4 mm	14	50	17					Standard	21SL TF04 MPX
	4 mm	14	50	17					Nickel Plated	21SL TF04 MPN
	6 mm	14	50	17					Standard	21SL TF06 MPX
	6 mm	14	50	17					Nickel Plated	21SL TF06 MPN
	8 mm	14	50	17					Standard	21SL TF08 MPX
	8 mm	14	50	17					Nickel Plated	21SL TF08 MPN
	9 mm	14	50	17					Standard	21SL TF09 MPX
	9 mm	14	50	17					Nickel Plated	21SL TF09 MPN
	10 mm	14	50	17					Standard	21SL TF10 MPX
	10 mm	14	50	17					Nickel Plated	21SL TF10 MPN
	6 mm Parker	14	54	20					Standard	21SL TP06 MPX
	6 mm Parker	14	54	20					Nickel Plated	21SL TP06 MPN
Panel Mount, Hose Barb	4 mm	14	64	17	14	14	4	M 10 x 1	Standard	21SL TS04 MPX
	4 mm	14	64	17	14	14	4	M 10 x 1	Nickel Plated	21SL TS04 MPN
	5 mm	14	64	17	14	14	4	M 12 x 1	Standard	21SL TS05 MPX
	5 mm	14	64	17	14	14	4	M 12 x 1	Nickel Plated	21SL TS05 MPN
	6 mm	14	64	17	14	17	4	M 12 x 1	Standard	21SL TS06 MPX
	6 mm	14	64	17	14	17	4	M 12 x 1	Nickel Plated	21SL TS06 MPN
	10 mm	14	64	17	14	19	4	M 14 x 1	Standard	21SL TS10 MPX
	10 mm	14	64	17	14	19	4	M 14 x 0	Nickel Plated	21SL TS10 MPN