SFA50F1-1X/M/01

Manufacturer: Bosch Rexroth

Material #: R900972963

Model : SFA50F1-1X/M/01

***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth SFA50F1-1X/M/01 (R900972963) is a high-quality pilot-operated check valve designed for both threaded and flange connections, catering to a wide range of hydraulic applications. This particular model is part of the SF series, with the option to select from types SFAGTXM without predecompression and SFAFTXM with predecompression, depending on the specific requirements of the system it will be integrated into. This valve is engineered for direct attachment to working cylinders, offering enhanced control over the flow and movement within hydraulic systems. The inclusion of an integrated high-pressure port expands its capabilities, allowing for a more versatile application in various hydraulic circuits. With its robust design, it ensures reliable operation even under demanding conditions. The Bosch Rexroth SFA50F1-1X/M/01 check valve boasts a size component series X, which indicates its adaptability to different system sizes and configurations. It can handle a maximum operating pressure of up to several hundred bar and supports maximum flow rates measured in liters per minute, which makes it suitable for a broad spectrum of industrial applications where precise fluid control is essential. Manufactured by Bosch Rexroth, a leader in drive and control technologies, this valve exemplifies the company's commitment to quality and performance. Its construction allows for seamless integration into existing hydraulic systems or as part of new installations where reliable backflow prevention is necessary. Whether used with or without predecompression, this model provides an efficient solution for maintaining directional stability and safety in hydraulic circuits.

$3,235.00 USD

More are expected on April 25, 2025

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Status: This product is temporarily out of stock.

Qty: Delivered as early as April 25, 2025 when ordered in

This product is eligible for factory repair.

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Pilot operated check valve For threaded connection (NG25 and 32) For flange connection according to ISO 6162-1 (from NG40) For direct attachment to the working cylinder With or without pre-decompression, optional Integrated high-pressure port

Type SFA…GT0-1X/M/01 (without pre-decompression)

Type SFA…FT1-X/M/01 (with pre-decompression)

01	Prefill valves	SFA
02	Size 25	25
	Size 32	32
	Size 40	40
	Size 50	50
	Size 63	63
	Size 80	80

03	Threaded connection (only NG25 and 32)	G
03	Flange connection (from NG40)	F
04	Without tank bore	no code
04	With tank bore (from NG32)	T
05	With pre-decompression (from NG32)	1
05	Without pre-decompression	0
06	Component series 10 ... 19 (10 ... 19: unchanged installation and connection dimensions)	1X
Seal material
07	NBR seals	M
07	Observe compatibility of seals with hydraulic fluid used. (Other seals upon request)
Connection version
08	Threaded holes with pipe thread according to DIN 3852 part 2	01
09	Further details in the plain text	*

01	02	03	04	05		06		07		08	09
SFA					–		/	M	/	01	*

general

Nenngröße		25	32	40	50	63	80
Weight (approx.)	kg	4.5	6	7	10.5	16	23
Installation position		any
Ambient temperature range	°C	-30 … +80

hydraulic

Size			25	32	40	50	63	80
Maximum operating pressure	Port P	bar	350
	Anschluss A	bar	16
	Port B	bar	350
	Anschluss X	bar	150
Cracking pressure 1)		bar	≈ 0.12
Maximum flow 2)	Case of application 1	l/min	125	200	300	500	800	1200
	Case of application 2	l/min	90	170	250	400	650	1000
	Case of application 3	l/min	60	140	220	360	560	900
	Case of application 4	l/min	40	100	150	240	380	620
	Case of application 5	l/min	20	70	110	170	280	450
Druckflüssigkeit			see table
Hydraulic fluid temperature range 3)		°C	-30 … +80
Viscosity range		mm²/s	10 … 800
Maximum admissible degree of contamination of the hydraulic fluid 4)			Class 20/18/15 according to ISO 4406 (c)

1)	Pressure differential at the main poppet for overcoming the spring force
2)	A to B
3)	At the valve working ports
4)	The cleanliness classes specified for the components must be adhered to in hydraulic systems. Effective filtration prevents faults and simultaneously increases the life cycle of the components. For the selection of the filters, see www.boschrexroth.com/filter.

Hydraulic fluid		Classification	Suitable sealing materials	Standards
Mineral oils and related hydrocarbons		HL, HLP, HVLP	NBR, FKM 3)	DIN 51524
Bio-degradable	Insoluble in water	HETG	NBR, FKM 3)	VDMA 24568
	Insoluble in water	HEES	FKM 3)	VDMA 24568
	Soluble in water	HEPG	FKM 3)	VDMA 24568
Flame-resistant	Water-free	HFDU, HFDR	FKM 3)	ISO 12922
Flame-resistant		HFC	NBR	ISO 12922
Important information on hydraulic fluids! Flame-resistant and bio-degradable:

	3) Upon request

Flow ‒ case of application 1 (A to B)

Flow ‒ case of application 2 (A to B)

Flow ‒ case of application 3 (A to B)

Size of the filling tank at least 1.5 x cylinder content

Flow ‒ case of application 4 (A to B)

Flow ‒ case of application 5 (A to B)

Information on case of application 2 to 5

For limit areas, please contact us. It is often enough, to select a pipeline which is one size larger.

Attention!

An underdimensioned prefill valve and/or an underdimensioned line leads to gas leaks from the hydraulic fluid with corresponding consequences and often to long-term damage at the cylinder seals.

1	Cylinders
2	Prefill valve
3	This sheet is not included in the scope of delivery. With smaller tank dimensions and minimum hydraulic fluid level (a), it prevents the formation of tunnels.
4	Observe the supply cross-section ‑ differs depending on the size!
a	min. 300 mm with extended cylinder
b	max. 1000 mm with the specified maximum flows
c	≥ 500 mm
h	~ 300 mm to max. 500 mm

For applications outside these parameters, please consult us!

(measured with HLP46, ϑOil = 40 ±5 °C)

Size 25 … 50

Pressure differential Δp between ports A and B dependent on the flow qV in suction direction A to B.

Size 63 and 80

Pressure differential Δp between ports A and B dependent on the flow qV in suction direction A to B.

Type SFA… (from NG25)

Type SFA…T… (from NG32)

Notice!

Possible circuit with directional valve and nozzle in channel P for one individual prefill valve. For the parallel connection of prefill valves, the nozzle is to be individually provided for every control line!

Threaded connection

Dimensions in mm

1	Name plate
6	4 valve mounting bores

Threaded connection

Dimensions in mm

1)	Only version "T"

1	Name plate
2	Seal ring
3	Provide bore Ø6.5 x 6 deep for the valve centering in the connection surface!
4	2 grooved dowel pins 6 x 12
5	Plug screw
6	4 valve mounting bores

Flange connection

Dimensions in mm

1)	Only version "T"

1	Name plate
2	Seal ring
3	Provide bore Ø6.5 x 6 deep for the valve centering in the connection surface!
4	2 grooved dowel pins 6 x 12
5	Plug screw (only version "T")
6	4 valve mounting bores
7	Flange connection according to ISO 6162-1

Dimensions

NG	L1		L2		L3	L4	ØD1	ØD2	ØD3		ØD4	ØD5	D6	ØD7	D8	D9	ØD10	H1	H2		H3	H4	H5	H6	H7	H8		H9	H10	H11		H12	H13
																max.	max.
	mm	mm	mm		mm	mm	mm	mm	mm	mm	mm	mm		mm		mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm
25	-	-	-		-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
32	-	-	-		-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
40	35.7	35.7	88.4	± 0.2 mm	58	62	10	15.7	90	± 0.1	17.5	58	M16	10	M12	38	40	85	69.9	± 0.2	109	102	85	22	116	88.4	± 0.2	10	26	92	± 0.1	54	18
50	42.9	42.9	102.5	± 0.2 mm	70	72	13	19	104	± 0.1	22	71	M20	13	M12	51	50	101	77.8	± 0.2	132	124	101	22	141	102.5	± 0.2	12	32	108	± 0.1	66	18
63	50.8	50.8	113.15	± 0.2 mm	80	82	13	19	120	± 0.1	26	90	M24	13	M12	64	63	125	88.9	± 0.2	152	144	125	30	160	113.15	± 0.2	14	38	130	± 0.1	83	18
80	61.9	61.9	134	+ 0.3 mm	92	95	13	19	140	± 0.1	30	107	M27	13	M16	76	78.5	140	106.4	± 0.2	170	158	140	30	185	134	+ 0.3	16	43	150	± 0.1	90	21

Poppet geometry and determination of the minimum pilot pressure

Dimensions in mm

A1	Effective area of the main poppet
A2	Effective area of the pilot poppet
A3	Effective area of the control spool
s1	Stroke of the main poppet
s2	Stroke of the control spool
F1	Spring force of the valve spring
F2	Spring force of the compression spring of the control spool
Vst x	Pilot volume for opening the valve
pÖ	Cracking pressure (pressure differential at the main poppet for overcoming the spring force F1)
pSt	Pilot pressure at port X
pB	System pressure at port B

Example: Type SFA32...G0

pB = 30 bar [435 psi];

pSt = 4.0 x 30 bar [435 psi] = 120 bar [1750 psi]

NG	A1	A2	A3	s1	s2	F1	F2	VstX	Unchecking ratio
	cm²	cm²	cm²	mm	mm	N	N	cm³	Without pre-decompression 2)	With pre-decompression
25	5.31	-	1.33	6.2	5	6 … 14	38 … 70	0.66	4	-
32	8.04	0.5 1)	2.01	8.5	6.5	9 … 22	58 … 109	1.3	4	0.3 3)
40	13.52	0.78 1)	3.14	10	7	14 … 29	93 … 162	2.2	4.3	0.3 3)
50	21.24	1.13 1)	4.71	12.5	9	23 … 49	149 … 261	4.2	4.5	0.3 3)
63	32.67	1.17 1)	7.07	14.5	11	35 … 63	206 … 348	7.8	4.6	0.3 3)
80	49.02	2.54 1)	10.18	17	13	57 … 127	310 … 579	13.2	4.8	0.3 3)

1)	Is omitted for version "without pre-decompression" (SFA...0...)
2)	Without pre-decompression
3)	With pre-decompression

Nozzle insert	Size		25	32	40	50	63	80
Nozzle insert	Nozzle Ø in mm	mm	0.8					1

SFA50F1-1X/M/01

Manufacturer: Bosch Rexroth

Material #: R900972963

Model : SFA50F1-1X/M/01

More are expected on April 25, 2025

This product is eligible for factory repair.

Type SFA…GT0-1X/M/01 (without pre-decompression)

Type SFA…FT1-X/M/01 (with pre-decompression)

hydraulic

Important information on hydraulic fluids!

Flame-resistant and bio-degradable:

Flow ‒ case of application 1 (A to B)

Flow ‒ case of application 2 (A to B)

Flow ‒ case of application 3 (A to B)

Flow ‒ case of application 4 (A to B)

Flow ‒ case of application 5 (A to B)

Information on case of application 2 to 5

Attention!

(measured with HLP46, ϑOil = 40 ±5 °C)

Size 25 … 50

Size 63 and 80

Type SFA… (from NG25)

Type SFA…T… (from NG32)

Notice!

Threaded connection

Threaded connection

Flange connection

Poppet geometry and determination of the minimum pilot pressure

Example: Type SFA32...G0

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