Single Shut-Off
Nominal Diameter
2.7 = 6 mm²
RECTUS Series
20KA
Chart
Technical Description
Mini industrial coupling, internationally used profile. Notable for a high flow and numerous application options with various media. Frequent use in mini-pneumatics, medical technology and chemistry/pharmacy.

Advantages
Single handed operation. Small dimensions.

Interchangeability
RECTUS 91
WALTHER 06-003
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)
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
 M 5 9 26 10 5 Standard 20KAAM05MPX
M 5 9 26 10 5 Nickel Plated 20KAAM05MPN
G 1/8 11 28 10 7 Standard 20KAAW10MPX
G 1/8 11 28 10 7 Nickel Plated 20KAAW10MPN
Female Thread
Female Thread
 M 5 9 26 10 5 Standard 20KAIM05MPX
M 5 9 26 10 5 Nickel Plated 20KAIM05MPN
G 1/8 12 28 10 7 Standard 20KAIW10MPX
G 1/8 12 28 10 7 Nickel Plated 20KAIW10MPN
Plastic Hose Connection
Plastic Hose Connection
 3 x 4 mm 9 34 10 7 5 M 7 x 0,5 Standard 20KAKO04MPX
3 x 4 mm 9 34 10 7 5 M 7 x 0,5 Nickel Plated 20KAKO04MPN
3 x 5 mm 9 34 10 7 5 M 7 x 0,5 Standard 20KAKO05MPX
3 x 5 mm 9 34 10 7 5 M 7 x 0,5 Nickel Plated 20KAKO05MPN
4 x 6 mm 9 34 10 7 5 M 8 x 0,5 Standard 20KAKO06MPX
4 x 6 mm 9 34 10 7 5 M 8 x 0,5 Nickel Plated 20KAKO06MPN
Panel Mount, Plastic Hose Connection
Panel Mount, Plastic Hose Connection
 3 x 4 mm 12 45 10 7 17 11 3 M 7 x 0,5 Standard 20KAKS04MPX
3 x 4 mm 12 45 10 7 17 11 3 M 7 x 0,5 Nickel Plated 20KAKS04MPN
3 x 5 mm 12 45 10 7 17 11 3 M 7 x 0,5 Standard 20KAKS05MPX
3 x 5 mm 12 45 10 7 17 11 3 M 7 x 0,5 Nickel Plated 20KAKS05MPN
4 x 6 mm 12 45 10 7 12 11 3 M 8 x 0,5 Standard 20KAKS06MPX
4 x 6 mm 12 45 10 7 12 11 3 M 8 x 0,5 Nickel Plated 20KAKS06MPN
Push-In
Push-In
 4 mm 10 35 10 Nickel Plated 20KARP04MPN
                     
                     
                     
Hose Barb
Hose Barb
 3 mm 35 10 13 Standard 20KATF03MPX
3 mm 35 10 13 Nickel Plated 20KATF03MPN
4 mm 35 10 13 Standard 20KATF04MPX
4 mm 35 10 13 Nickel Plated 20KATF04MPN
5 mm 34 10 13 Standard 20KATF05MPX
5 mm 34 10 13 Nickel Plated 20KATF05MPN
Panel Mount, Hose Barb
Panel Mount, Hose Barb
 3 mm 12 51 10 13 17 11 3 M 7 x 0,5 Standard 20KATS03MPX
3 mm 12 51 10 13 17 11 3 M 7 x 0,5 Nickel Plated 20KATS03MPN
4 mm 12 51 10 13 17 11 3 M 7 x 0,5 Standard 20KATS04MPX
4 mm 12 51 10 13 17 11 3 M 7 x 0,5 Nickel Plated 20KATS04MPN
6 mm 12 51 10 13 17 12 3 M 10 x 1 Standard 20KATS06MPX
6 mm 12 51 10 13 17 12 3 M 10 x 1 Nickel Plated 20KATS06MPN

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
Plastic Hose Connection
 3 x 4 mm 7 25 7 5 M 7 x 0,5 Standard 20SFKO04MXX
3 x 4 mm 7 25 7 5 M 7 x 0,5 Nickel Plated 20SFKO04MXN
3 x 5 mm 7 25 7 5 M 7 x 0,5 Standard 20SFKO05MXX
3 x 5 mm 7 25 7 5 M 7 x 0,5 Nickel Plated 20SFKO05MXN
4 x 6 mm 8 25 7 5 M 8 x 0,5 Standard 20SFKO06MXX
4 x 6 mm 8 25 7 5 M 8 x 0,5 Nickel Plated 20SFKO06MXN
Panel Mount, Plastic Hose Connection
Panel Mount, Plastic Hose Connection
 3 x 4 mm 11 38 7 17 11 3 M 7 x 0,5 Standard 20SFKS04MXX
3 x 4 mm 11 38 7 17 11 3 M 7 x 0,5 Nickel Plated 20SFKS04MXN
3 x 5 mm 11 38 7 17 11 3 M 7 x 0,5 Standard 20SFKS05MXX
3 x 5 mm 11 38 7 17 11 3 M 7 x 0,5 Nickel Plated 20SFKS05MXN
4 x 6 mm 12 38 7 17 12 3 M 8 x 0,5 Standard 20SFKS06MXX
4 x 6 mm 12 38 7 17 12 3 M 8 x 0,5 Nickel Plated 20SFKS06MXN
Push-In
Push-In
 4 mm 10 35 10 Nickel Plated 20SFRP04MPN
                     
                     
                     
Hose Barb
Hose Barb
 3 mm 24 7 13 Standard 20SFTF03MXX
3 mm 24 7 13 Nickel Plated 20SFTF03MXN
4 mm 24 7 13 Standard 20SFTF04MXX
4 mm 24 7 13 Nickel Plated 20SFTF04MXN
5 mm 22 9 13 Standard 20SFTF05MXX
5 mm 22 9 13 Nickel Plated 20SFTF05MXN
Panel Mount, Hose Barb
Panel Mount, Hose Barb
 3 mm 12 45 13 18 11 3,5 M 7 x 0,5 Standard 20SFTS03MXX
3 mm 12 45 13 18 11 3,5 M 7 x 0,5 Nickel Plated 20SFTS03MXN
4 mm 12 45 13 17 11 3 M 7 x 0,5 Standard 20SFTS04MXX
4 mm 12 45 13 17 11 3 M 7 x 0,5 Nickel Plated 20SFTS04MXN

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
 M 5 7 18 5 Standard 20SFAM05MXX
M 5 7 18 5 Nickel Plated 20SFAM05MXN
G 1/8 11 20 7 Standard 20SFAW10MXX
G 1/8 11 20 7 Nickel Plated 20SFAW10MXN
Female Thread
Female Thread
 M 5 7 17 5 Standard 20SFIM05MXX
M 5 7 17 5 Nickel Plated 20SFIM05MXN
G 1/8 12 19 7 Standard 20SFIW10MXX
G 1/8 12 19 7 Nickel Plated 20SFIW10MXN