Single Shut-Off
Nominal Diameter
7.8 = 48 mm²
RECTUS Series
25KS
Chart
Technical Description
Safety coupling with UltraFlo technology. High flow performance. Notable for robust design and steel sleeve used with large pneumatic consumers. Additional safety locking system. This safety lock prevents unintentional disconnection. To disconnect, the plug must first be pushed further into the coupling before it can be unlocked.

Advantages
Quality coupling with small dimensions and high flow rates. Safety locking system. Double profiled plug design against wear of material during operation.

Working Pressure
PB = 35 bar (brass)
PB = 70 bar (with steel body and steel seal)
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 Brass
Back Body
Valve Body
Sleeve
Valve
Spring and Locking Ring
Locking Balls
Seals
Inner Sleeve
Spring Plate		 Brass
Brass
Brass
Brass
AISI 301
AISI 420
NBR
Brass
Brass		 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
Plugs Steel Hardened,
Zinc-Plated		 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
 R 1/4 19 60 23 12 Standard 25KSAK13SPN
R 1/4 19 60 23 12 Brass 25KSAK13BPX
R 1/4 19 60 23 12 Brass, Nickel Plated 25KSAK13BPN
R 3/8 19 60 23 12 Standard 25KSAK17SPN
R 3/8 19 60 23 12 Brass 25KSAK17BPX
R 3/8 19 60 23 12 Brass, Nickel Plated 25KSAK17BPN
R 1/2 22 61 23 17 Standard 25KSAK21SPN
R 1/2 22 61 23 17 Brass 25KSAK21BPX
R 1/2 22 61 23 17 Brass, Nickel Plated 25KSAK21BPN
Female Thread
Female Thread
 G 1/4 19 56 23 10 Standard 25KSIW13SPN
G 1/4 19 56 23 10 Brass 25KSIW13BPX
G 1/4 19 56 23 10 Brass, Nickel Plated 25KSIW13BPN
G 3/8 19 55 23 9 Standard 25KSIW17SPN
G 3/8 19 55 23 9 Brass 25KSIW17BPX
G 3/8 19 55 23 9 Brass, Nickel Plated 25KSIW17BPN
G 1/2 24 58 23 12 Standard 25KSIW21SPN
Hose Barb
Hose Barb
 6 mm 19 74 23 25 Standard 25KSTF06SPN
8 mm 19 74 23 25 Standard 25KSTF08SPN
8 mm 19 74 23 25 Brass 25KSTF08BPX
8 mm 19 74 23 25 Brass, Nickel Plated 25KSTF08BPN
9 mm 19 74 23 25 Standard 25KSTF09SPN
9 mm 19 74 23 25 Brass 25KSTF09BPX
9 mm 19 74 23 25 Brass, Nickel Plated 25KSTF09BPN
10 mm 19 74 23 25 Standard 25KSTF10SPN
10 mm 19 74 23 25 Brass 25KSTF10BPX
10 mm 19 74 23 25 Brass, Nickel Plated 25KSTF10BPN
13 mm 19 74 23 25 Standard 25KSTF13SPN
13 mm 19 74 23 25 Brass 25KSTF13BPX
13 mm 19 74 23 25 Brass, Nickel Plated 25KSTF13BPN

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
 R 1/8 13 33 9 Standard 25SSAK10SXZ
R 1/4 14 37 12 Standard 25SSAK13SXZ
G 1/4 17 33 9 Brass 26SSAW13MXX
G 1/4 17 33 9 Brass, Nickel Plated 26SSAW13MXN
R 3/8 17 37 12 Standard 25SSAK17SXZ
R 1/2 22 43 17 Standard 25SSAK21SXZ
Female Thread
Female Thread
 G 1/4 17 33 9 Standard 25SSIW13SXZ
G 3/8 19 33 9 Standard 25SSIW17SXZ
G 1/2 24 36 12 Standard 25SSIW21SXZ
                     

Plugs

  Connection A Hex SW L mm D mm L1 mm L2 mm Hex1 SW B mm G mm Version Part Number
Hose Barb
Hose Barb
 6 mm 48 12 25 Standard 25SSTF06SXZ
8 mm 48 12 25 Standard 25SSTF08SXZ
8 mm 48 12 25 Brass, Nickel Plated 26SSTF08MXN
9 mm 48 12 25 Standard 25SSTF09SXZ
10 mm 48 12 25 Standard 25SSTF10SXZ
13 mm 48 15 25 Standard 25SSTF13SXZ