Safety Coupler

SERIES 21 KS & 21 KR - Automatic Single Shut-Off & Automatic Straight-Thru - NOMINAL PLUG BORE .20"



Specifications:
  • Working Temperature: depending on medium
    -4°F up to +210°F (NBR)
    -40°F up to +250/300°F (EPDM)
    +5°F up to +400°F (FKM)
    +32°F up to +600°F (FFKM)
    At a temperature below -4°F and above +300°F special seals are available.
  • Working Pressure: 500 psi, maximum static working pressure with 4:1 design factor.

Note:
  • Metric male (DIN 2353) & female threads and BSP male & female threads are available upon request.
Similar to the 21KA Series except with an additional safety locking system. When being disconnected, the plug must first be pushed further into the coupler before it can be disconnected. This prevents unintentional disconnection. This series is also available without a valve in a Straight-Thru design. For Straight-Thru Couplers, please change the part number from 21KS to 21KR when ordering.

Material
COUPLER STANDARD
MATERIAL		 NICKEL
PLATED
Back Body Brass Brass,
Nickel Plated
Valve Body Brass Brass,
Nickel Plated
Sleeve Brass Brass,
Nickel Plated
Valve Brass Brass
Spring & Locking Ring AISI 301 AISI 301
Locking Balls AISI 420 AISI 420
Seals NBR NBR
PLUG Brass Brass,
Nickel Plated
Series 21 KS Couplers
Plug
Type		 Connection
(A)		 Hex
(SW)		 Length
(L)		 Depth
(D)		 L1 L2 Hex1
(SW1)		 B G Standard Design
P/N		 Nickel Plated
P/N
Male
Thread		 1/8" NPT .55 1.49 .63 .35 21KS AN10 MPX 21KS AN10 MPN
1/4" NPT .55 1.61 .63 .47 21KS AN13 MPX 21KS AN13 MPN
3/8" NPT .66 1.61 .63 .47 21KS AN17 MPX 21KS AN17 MPN
Female
Thread		 1/8" NPSF .55 1.55 .63 .47 21KS IN10 MPX 21KS IN10 MPN
1/4" NPSF .66 1.77 .63 .51 21KS IN13 MPX 21KS IN13 MPN
3/8" NPSF .74 1.88 .63 .55 21KS IN17 MPX 21KS IN17 MPN
Hose
Barb		 5/32" .55 1.81 .63 .66 21KS TF04 MPX 21KS TF04 MPN
3/16" .55 1.81 .63 .66 21KS TF05 MPX 21KS TF05 MPN
1/4" .55 1.81 .63 .66 21KS TF06 MPX 21KS TF06 MPN
5/16" .55 1.81 .63 .66 21KS TF08 MPX 21KS TF08 MPN
3/8" .55 1.81 .63 .66 21KS TF10 MPX 21KS TF10 MPN
Push-Lock Hose Barb 1/4" P.L. .55 1.96 .63 .78 21KS TP06 MPX 21KS TP06 MPN
Plastic Hose
Connection		 5/32" x 1/4" .55 1.69 .63 .27 .27 M 10x1 21KS KO46 MPX 21KS KO46 MPN
1/4" x 5/16" .55 1.65 .63 .27 .23 M 10x1 21KS KO08 MPX 21KS KO08 MPN
Panel Mount,
Plastic Hose Conn.		 5/32" x 1/4" .55 2.12 .63 .27 .70 .55 .15 M 10x1 21KS KS46 MPX 21KS KS46 MPN
1/4" x 5/16" .66 2.12 .63 .27 .70 .66 .15 M 12x1 21KS KS08 MPX 21KS KS08 MPN
Panel Mount
Hose Barb 		5/32" .55 2.36 .63 .66 .55 .55 .15 M 10x1 21KS TS04 MPX 21KS TS04 MPN
3/16" .66 2.36 .63 .66 .55 .66 .15 M 12x1 21KS TS05 MPX 21KS TS05 MPN
1/4" .66 2.36 .63 .66 .55 .66 .15 M 12x1 21KS TS06 MPX 21KS TS06 MPN
5/16" .66 2.36 .63 .66 .55 .66 .15 M 12x1 21KS TS08 MPX 21KS TS08 MPN

Male Thread
Coupler
Female Thread
Coupler
Hose Barb
Coupler

Push-Lock Hose
Barb Coupler
Plastic Hose
Connection
Panel Mount Plastic
Hose Connect. Coupler

Panel Mount Hose
Barb Coupler

Series 21 SS Plugs
Plug
Type		 Connection
(A)		 Hex
(SW)		 Length
(L)		 Depth
(D)		 L1 Standard Design
P/N		 Nickel Plated
P/N
Male
Thread		 1/8" NPT .43 1.06 .35 21SS AN10 MXX 21SS AN10 MXN
1/4" NPT .55 1.20 .47 21SS AN13 MXX 21SS AN13 MXN
Female
Thread		 1/8" NPSF .55 1.14 .35 21SS IN10 MXX 21SS IN10 MXN
1/4" NPSF .66 1.33 .51 21SS IN13 MXX 21SS IN13 MXN
Hose
Barb		 5/32" 1.26 .35 .66 21SS TF04 MXX 21SS TF04 MXN
1/4" 1.26 .35 .66 21SS TF06 MXX 21SS TF06 MXN
5/16" 1.26 .35 .66 21SS TF08 MXX 21SS TF08 MXN
3/8" 1.29 .47 .66 21SS TF10 MXX 21SS TF10 MXN

Hose Barb
Plug
Male Thread
Plug
Female Thread
Plug