Decoupler and separator

Decouplers are parts that separate stages of rockets either vertically or radially.

Some types of vertical decouplers, such as the TR-2C Stack Separator and TR-18D Stack Separator, separate on both sides, whereas others, such as the TR-18A Stack Decoupler, remain attached to one side of the rocket (the side facing away from the arrow on the decoupler).

Radial decouplers, such as the TT-70 Radial Decoupler, attach to the sides of a rocket and eject stages horizontally. This can be useful for setting up Asparagus Staging, among other uses.

Part	Radial size	Cost ()	Mass (t)	Max. Temp. (K)	Tolerance (m/s)	Tolerance (g)	Ejection impulse (kgF∙s)^{[Note 1]}
TT-38K Radial Decoupler	Radial mounted	600	0.025	2 000	8	50	250
TT-70 Radial Decoupler	Radial mounted	700	0.05	2 000	8	50	260
Hydraulic Detachment Manifold	Radial mounted	770	0.4	2 000	8	50	450
TD-06 Decoupler	Tiny	150	0.01	2 000	6	150	50
TD-12 Decoupler	Small	200	0.04	2 000	6	150	100
TD-25 Decoupler	Large	300	0.16	2 000	6	150	150
TD-37 Decoupler	Extra large	375	0.36	2 000	6	150	200
TS-06 Stack Separator	Tiny	215	0.01	2 000	6	150	50
TS-12 Stack Separator	Small	275	0.05	2 000	6	150	100
TS-25 Stack Separator	Large	400	0.21	2 000	6	150	150
TS-37 Stack Separator	Extra large	500	0.48	2 000	6	150	200