Single Shut-Off
Nominal Diameter
5 = 20 mm²
RECTUS Series
90KA
Chart
Technical Description
Small, splash-protected industrial coupling, specially developed for liquid media as the plug profile acts as a seal before the coupling valve is opened. Series 90 is a variant of series 21. Pin locking. Enlarged external sleeve
diameter of 20 mm.

Advantages
Single handed operation. No loss through leakage during coupling.

Interchangeability
RECTUS 21
CAMOZZI
EWO
KANI
Working Pressure
PB = 35 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
-20°C and above +100°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		 Brass
Brass
Brass
Brass
AISI 301
AISI 420
NBR		 Brass, Nickel Plated
Brass, Nickel Plated
Brass, Nickel Plated
Brass
AISI 301
AISI 420
NBR
Plug
Plug Brass Brass, Nickel Plated

Couplings

  Connection A Hex SW L mm D mm L1 mm L2 mm Hex1 SW B mm G mm Version Part Number
Male Thread
Male Thread
 G 1/8 14 36 20 7 Standard 90KAAW10MPX
G 1/8 14 36 20 7 Nickel Plated 90KAAW10MPN
G 1/4 17 38 20 9 Standard 90KAAW13MPX
G 1/4 17 38 20 9 Nickel Plated 90KAAW13MPN
G 3/8 19 39 20 9 Standard 90KAAW17MPX
G 3/8 19 39 20 9 Nickel Plated 90KAAW17MPN
Female Thread
Female Thread
 G 1/4 17 38 20 9 Standard 90KAIW13MPX
G 1/4 17 38 20 9 Nickel Plated 90KAIW13MPN
G 3/8 19 38 20 9 Standard 90KAIW17MPX
G 3/8 19 38 20 9 Nickel Plated 90KAIW17MPN
Hose Barb
Hose Barb
 6 mm 14 46 20 17 Standard 90KATF06MPX
6 mm 14 46 20 17 Nickel Plated 90KATF06MPN
8 mm 14 46 20 17 Standard 90KATF08MPX
8 mm 14 46 20 17 Nickel Plated 90KATF08MPN
9 mm 14 46 20 17 Standard 90KATF09MPX
9 mm 14 46 20 17 Nickel Plated 90KATF09MPN
10 mm 14 46 20 17 Standard 90KATF10MPX
10 mm 14 46 20 17 Nickel Plated 90KATF10MPN

Plugs

  Connection A Hex SW L mm D mm L1 mm L2 mm Hex1 SW B mm G mm Version Part Number
Plastic Hose Connection with Spring Guard
Plastic Hose Connection with Spring Guard
 4 x 6 mm 115 6 6 M 10 x 1 Standard 21SFKK06MXX
4 x 6 mm 115 6 6 M 10 x 1 Nickel Plated 21SFKK06MXN
6 x 8 mm 120 6 6 M 12 x 1 Standard 21SFKK08MXX
6 x 8 mm 120 6 6 M 12 x 1 Nickel Plated 21SFKK08MXN
Plastic Hose Connection
Plastic Hose Connection
 4 x 6 mm 32 10 6 6 M 10 x 1 Standard 21SFKO06MXX
4 x 6 mm 32 10 6 6 M 10 x 1 Nickel Plated 21SFKO06MXN
6 x 8 mm 32 12 6 6 M 12 x 1 Standard 21SFKO08MXX
6 x 8 mm 32 12 6 6 M 12 x 1 Nickel Plated 21SFKO08MXN
8 x 10 mm 17 36 9 8 M 16 x 1 Standard 21SFKO10MXX
8 x 10 mm 17 36 9 8 M 16 x 1 Nickel Plated 21SFKO10MXN
8 x 12 mm 17 36 9 8 M 16 x 1 Standard 21SFKO12MXXS
8 x 12 mm 17 36 9 8 M 16 x 1 Nickel Plated 21SFKO12MXNS
Panel Mount, Plastic Hose Connection
Panel Mount, Plastic Hose Connection
 4 x 6 mm 14 43 7 18 12 3 M 10 x 1 Standard 21SFKS06MXX
4 x 6 mm 14 43 7 18 12 3 M 10 x 1 Nickel Plated 21SFKS06MXN
6 x 8 mm 14 44 7 18 17 4 M 12 x 1 Standard 21SFKS08MXX
6 x 8 mm 14 44 7 18 17 4 M 12 x 1 Nickel Plated 21SFKS08MXN
Hose Barb
Hose Barb
 4 mm 32 9 17 Standard 21SFTF04MXX
4 mm 32 9 17 Nickel Plated 21SFTF04MXN
5 mm 32 9 17 Standard 21SFTF05MXX
5 mm 32 9 17 Nickel Plated 21SFTF05MXN
6 mm 32 9 17 Standard 21SFTF06MXX
6 mm 32 9 17 Nickel Plated 21SFTF06MXN
8 mm 32 9 17 Standard 21SFTF08MXX
8 mm 32 9 17 Nickel Plated 21SFTF08MXN
9 mm 33 10 17 Standard 21SFTF09MXX
9 mm 33 10 17 Nickel Plated 21SFTF09MXN
10 mm 33 12 17 Standard 21SFTF10MXX
10 mm 33 12 17 Nickel Plated 21SFTF10MXN
Panel Mount, Hose Barb
Panel Mount, Hose Barb
 4 mm 14 50 17 14 14 4 M 10 x 1 Standard 21SFTS04MXX
4 mm 14 50 17 14 14 4 M 10 x 1 Nickel Plated 21SFTS04MXN
5 mm 14 50 17 14 17 4 M 12 x 1 Standard 21SFTS05MXX
5 mm 14 50 17 14 17 4 M 12 x 1 Nickel Plated 21SFTS05MXN
6 mm 14 50 17 14 17 4 M 12 x 1 Standard 21SFTS06MXX
6 mm 14 50 17 14 17 4 M 12 x 1 Nickel Plated 21SFTS06MXN
8 mm 14 50 17 14 17 4 M 12 x 1 Standard 21SFTS08MXX
8 mm 14 50 17 14 17 4 M 12 x 1 Nickel Plated 21SFTS08MXN
9 mm 14 50 17 14 17 4 M 12 x 1 Standard 21SFTS09MXX
9 mm 14 50 17 14 17 4 M 12 x 1 Nickel Plated 21SFTS09MXN
10 mm 17 50 17 14 19 4 M 14 x 1 Standard 21SFTS10MXX
10 mm 17 50 17 14 19 4 M 14 x 1 Nickel Plated 21SFTS10MXN

Plugs

  Connection A Hex SW L mm D mm L1 mm L2 mm Hex1 SW B mm G mm Version Part Number
Male Thread
Male Thread
 G 1/8 14 25 7 Standard 21SFAW10MXX
G 1/8 14 25 7 Nickel Plated 21SFAW10MXN
G 1/4 17 28 9 Standard 21SFAW13MXX
G 1/4 17 28 9 Nickel Plated 21SFAW13MXN
G 3/8 19 28 9 Standard 21SFAW17MXX
G 3/8 19 28 9 Nickel Plated 21SFAW17MXN
M 10 x 1 14 26 8 Standard 21SFAD10MXX
M 10 x 1 14 26 8 Nickel Plated 21SFAD10MXN
M 12 x 1,5 17 28 10 Standard 21SFAD12MXX
M 12 x 1,5 17 28 10 Nickel Plated 21SFAD12MXN
M 14 x 1,5 19 28 10 Standard 21SFAD14MXX
M 14 x 1,5 19 28 10 Nickel Plated 21SFAD14MXN
Female Thread
Female Thread
 G 1/8 14 25 8 Standard 21SFIW10MXX
G 1/8 14 25 8 Nickel Plated 21SFIW10MXN
G 1/4 17 25 9 Standard 21SFIW13MXX
G 1/4 17 25 9 Nickel Plated 21SFIW13MXN
G 3/8 19 26 9 Standard 21SFIW17MXX
G 3/8 19 26 9 Nickel Plated 21SF IW17MXN
M 10 x 1 14 26 9 Standard 21SF IM10 MXX
M 10 x 1 14 26 9 Nickel Plated 21SFIM10MXN
M 12 x 1,5 17 27 10 Standard 21SFIM12MXX
M 12 x 1,5 17 27 10 Nickel Plated 21SFIM12MXN
M 14 x 1,5 17 27 10 Standard 21SFIM14MXX
M 14 x 1,5 17 27 10 Nickel Plated 21SFIM14MXN