Safety Coupler

SERIES 21 KD - Miniature - Automatic Double Shut-Off - 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.
The coupler and the plug are both fitted with a valve. Both valves are open when the connection is made which guarantees immediate flow. To prevent leaking, the valves close when the coupler is disconnected. The special locking system, based on 21KS, prevents an unintentional disconnection.


Material
COUPLER STANDARD
MATERIAL
Back Body Brass,
Nickel Plated
Valve Body Brass,
Nickel Plated
Sleeve Brass,
Nickel Plated
Valve Brass
Spring &
Locking Ring		 AISI 301
Locking Balls AISI 420
Seals NBR
PLUG
Plug Profile Brass,
Nickel Plated
Back Body Brass,
Nickel Plated
Valve Brass
Spring AISI 301
Seal NBR
Series 21 KD Couplers
Plug
Type		 Connection
(A)		 Hex
(SW)		 Length
(L)		 Depth
(D)		 L1 Standard
Design P/N
Male
Thread		 1/8" NPT .55 1.49 .63 .35 21KD AN10 MPN
1/4" NPT .55 1.61 .63 .47 21KD AN13 MPN
3/8" NPT .66 1.61 .63 .47 21KD AN17 MPN
Female
Thread		 1/8" NPSF .55 1.55 .63 .47 21KD IN10 MPN
1/4" NPSF .66 1.77 .63 .51 21KD IN13 MPN
3/8" NPSF .74 1.88 .63 .55 21KD IN17 MPN
Hose
Barb		 1/4" .55 1.81 .63 .66 21KD TF06 MPN
5/16" .55 1.81 .63 .66 21KD TF08 MPN
3/8" .55 1.81 .63 .66 21KD TF10 MPN

Male Thread
Coupler
Female Thread
Coupler
Hose Barb
Coupler

Series 21 SD Valved Plugs
Plug
Type		 Connection
(A)		 Hex
(SW)		 Length
(L)		 L1 Standard
Design P/N
Male
Thread		 1/8" NPT .55 1.65 .35 21SD AN10 MPN
1/4" NPT .55 1.77 .47 21SD AN13 MPN
3/8" NPT .66 1.77 .47 21SD AN17 MPN
Female
Thread		 1/8" NPSF .55 1.71 .39 21SD IN10 MPN
1/4" NPSF .66 1.96 .51 21SD IN13 MPN
3/8" NPSF .74 2.04 .55 21SD IN17 MPN
Hose
Barb		 1/4" .55 1.86 .66 21SD TF06 MPN
5/16" .55 1.86 .66 21SD TF08 MPN
3/8" .55 1.86 .66 21SD TF10 MPN

Male Thread
Plug
Female Thread
Plug
Hose Barb
Plug