NM - Couplings

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For Refrigerant Gas, Helium
Excellent for Vacuum Applications
( High performance airtight coupling)
(Two-way Shut-off Valve )

Automatic shut-off valves in both socket & plug
High precision mechanism to endure severe operating conditions in vacuum suction applications.
Designed to withstand a vacuum of 1.3 x 10 ^-1 Pa

	Special type of packing materials are used to suit applications in assembly lines, refrigerant charging lines and air conditioner final testing lines
	Designed for applications in vacuum suction and refrigerant gas charging. Automatic shut-off (open/close) valve mechanisms are used in both socket and plug. Our designed high precision mechanism endures severe operating conditions in vacuum suction applications.
	Design allows tight sealing of socket and plug when disconnected. The SPR series couplings withstand a vacuum of 1.3x10^-1Pa (1x10^-3 mmHg). This enables replenishing of several refrigerants (R-134a, R-410a, R-407c) and freezing application liquids
	The SPR series couplings can be connected to YSP Series couplings and LCG type charging guns.
	SPR series couplings are approved to international JRA regulations for air conditioner and other refrigerant gases applications and manufacturing
	SPR series conform to SAE standards.

Specifications
Body Material	Brass (BSBM)		Stainless Steel
Size	1/8", 1/4", 3/8"	1/2"	1/8", 1/4", 3/8"	1/2"
Working Pressure MPa (Kgf/cm²)	4.9 (50)	2.9 (30)	7.3 (75)	4.4 (45)
Pressure Resistance MPa (Kgf/cm²)	7.3 (75)	4.4 (45)	9.8 (100)	6.3 (65)
Packing material, Working temperature range	Packing	Symbol	Working Temperature	Fluid	Remarks
	HNBR*	HNBR	-20°C ~ +120°C	R-134a	Std. Material
	Neoprene	NR-28	-20°C ~ +80°C	R22, Helium
				R-407c, R-410a

*HNBR - Hydrogen added nitrite butadiene rubber

Charactristics

Fluid Flow Direction

Fluid flows in either direction from socket or plug

Minimum Cross-sectional Area (mm²)

Model	SPR-250	SPR-350	SPR-450
Min. Cross-sectional Area	25	45	90

Product Models & Dimensions

Plug		Socket

Plug Model	L (mm)	A (mm)	E (mm)	T	H (mm)
PR-150	29	19	11	Rc1/8	HEX. 14
PR-250	35.5	22	12.4	Rc1/4	HEX. 17
PR-350	39.9	25.2	13	Rc3/8	HEX. 21
PR-450	44	28	15	Rc1/2	HEX. 29

Socket Model	L (mm)	D (mm)	E (mm)	T	H (mm)
SR-150	48	24	11	Rc1/8	Face width 14
SR-250	58	28	12.4	Rc1/4	Face width 17
SR-350	65	35	13	Rc3/8	Face width 21
SR-450	71.7	45	15	Rc1/2	Face width 29

Refrigerant Packing Materials

Refrigerant

R134a

R22

R410a

R407c

Packing material

HNBR
(Hydrogen added nitrite butadiene rubber)

Neoprene

Symbol

HNBR

NR-28

Features

»	Efficient applications in HFC134a (R134a).
»	Conform to JRA2009 standards
»	Widely used by several automobile companies for Car air conditioner applications

Excellent durability and resistance to Freon gas
(R12, R22)

Excellent durability and resistance to Freon gas (R410a, R407c)

Applications

»	Car air conditioner production line
»	Refrigeration production line

Building air conditioners

Package air conditioners

Ordering Information

Type

Size

Body Material

Packing Material

S	Socket
P	Plug

150	1/8
250	1/4
350	3/8
450	1/2

BSBM	Brass
SUS	Stainless Steel (SUS304)

HNBR	Hydrogen added Nitrite butadiene rubber
NR-28	Chloroprene rubber (Neoprene)