HY-CHECK VALVE S25A05-1X/420J3

Manufacturer: Bosch Rexroth

Material #: R901454079

Model : S25A05-1X/420J3

***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 S25A05-1X/420J3 (R901454079) is a high-performance industrial hydraulic seat valve designed for reliable blocking of oil flow at selected ports. This direct-actuated valve belongs to component series X and features a spool symbol A B, indicating its specific configuration and function within a hydraulic system. It is equipped to handle a maximum pressure, with an electrical connection that simplifies integration into various circuit designs. This model boasts multiple ports and offers a maximum flow rate suitable for demanding applications. The type of connection used is a threaded connection, ensuring secure and leak-free attachment to the hydraulic system. The number of switching positions available with this valve allows for versatile operation across different settings. With its considerable size and weight, the S25A05-1X/420J3 valve is built for durability and robust performance. It is compatible with a wide range of hydraulic fluids including HL, HLP, HLPD, HVLP, HVLPD, HETG, HEES, HEPG, HFDU, HFDR, and HFC types. This versatility ensures that it can be used in systems with diverse fluid requirements without compromising on efficiency or safety. Moreover, the valve offers leakage-free blocking in one direction which enhances system integrity and performance. Users can also select from various cracking pressures according to their specific needs—this customization potential makes the Bosch Rexroth S25A05-1X/420J3 valve a flexible solution for many industrial applications requiring precise control over hydraulic flow.

$274.00 USD

More are expected on March 31, 2025

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Status: This product is temporarily out of stock.

Qty: Delivered as early as March 31, 2025 when ordered in

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HY-CHECK VALVE S25A05-1X/420J3

Size 25, A → B, hydraulically actuated

Industrial hydraulic valve in a high performance range. Reliable blocking of the oil flow at selected ports.

Unpacked Weight: 2.383 kg

For threaded connection (screw-in thread) Leakage-free blocking in one direction Various cracking pressures, optional

Seat valve
Direct actuated
Size 6 … 30
Maximum operating pressure 450 bar
Component series 1X
Maximum flow 450 l/min

Data Sheet	Download Data Sheet
3D CAD	Download 3D CAD
Manual	Download Manual
Manual	Download Manual
Manual	Download Manual
Manual	Download Manual
Manual	Download Manual

Spool symbol	A → B
Max. pressure	420
Electrical connection description	0
Productgroup ID	9,10,11,12,13,14
Number of ports	2
Size	25
Max. flow	350
Type of connection	Threaded connection
Connection diagram	Pipe thread G1 1/4 ISO 228-1
Number of switching positions	2
Weight	2.383
Hydraulic fluid	HL,HLP,HLPD,HVLP,HVLPD,HETG,HEES,HEPG,HFDU,HFDR,HFC

01	02	03	04		05		06	07	08	09
S		A		-	1X	/

Type
01	Isolator valve	S
Size
02	Size 6	6
	Size 8	8
	Size 10	10
	Size 15	15
	Size 20	20
	Size 25	25
	Size 30	30
Connection
03	Threaded connection	A
Cracking pressure (see characteristic curves)
04	0 bar (without spring)	00
	0,2 bar	02
	0.5 bar (standard)	05
	1,5 bar	15
	3,0 bar	30
	5 bar	50
	8 bar (only NG25 and 30)	80
Component series
05	Component series 10 ... 19 (10 ... 19: unchanged installation and connection dimensions)	1X
Maximum operating pressure
06	Maximum operating pressure 420 bar (Nominal size 25 and 30)	420
06	Maximum operating pressure 450 bar (Nominal size 6 ... 20)	450
Corrosion resistance
07	Improved corrosion protection (240 h salt spray test according to EN ISO 9227)	J3
07	High corrosion protection (720 h salt spray test according to EN ISO 9227)	J5
Piston bore (orifice in channel B)
08	Without piston bore	no code
	Thread M4; not fitted	B00
	Orifice Ø1.0 mm	B10
	Orifice Ø1.2 mm	B12
	Orifice Ø1.5 mm	B15
Connection thread 1)
09	Pipe thread "G" according to ISO 228-1	no code
	Pipe thread "M" according to ISO 261	/2
	Pipe thread “UNF/UN” according to ANSI/ASME B 1.1	/12

1)	Other versions available on request

general

Size		6	8	10	15	20	25	30
Weight	kg	0.1	0.2	0.3	0.5	1	2	2.5
MTTFD values according to EN ISO 13849	Years	150 1)

1)	Not for version "00"; Certificate "Assumed exclusion of faults according to EN ISO 13849-2:2012-10 tab. C4" available upon request. For further details, see data sheet 08012

hydraulic

Size		6	8	10	15	20	25	30
Maximum operating pressure 1)	bar	450					420
Cracking pressure		See characteristic curves
Maximum flow		See characteristic curves
Hydraulic fluid		see table
Hydraulic fluid temperature range	°C	-30 … +80
Viscosity range	mm²/s	2.8 … 500
Maximum admissible degree of contamination of the hydraulic fluid 2)		Class 20/18/15 according to ISO 4406 (c)

1)	Maximum operating pressures up to 1000 bar upon request.
2)	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	Standards	Data sheet
Mineral oils		HL,HLP, HLPD, HVLP, HVLPD	DIN 51524	90220
Bio-degradable 1)	Insoluble in water	HETG	ISO 15380	90221
	Insoluble in water	HEES	ISO 15380
	Soluble in water	HEPG	ISO 15380
Flame-resistant	Water-free	HFDU (glycol base)
	Water-free	HFDU (ester base) 1)	ISO 12922	90222
	Containing water 1)	HFC (Fuchs Hydrotherm 46M, Petrofer Ultra Safe 620)	ISO 12922	90223
Important information on hydraulic fluids: For further information and data on the use of other hydraulic fluids, please refer to the data sheets above or contact us. There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.). The ignition temperature of the hydraulic fluid used must be 50 K higher than the maximum surface temperature. Flame-resistant – containing water: Life cycle as compared to operation with mineral oil HL, HLP 30 … 100% Maximum hydraulic fluid temperature 60 °C

1)	Small amounts of dissolved zinc may get into the hydraulic system during use.

For applications outside these parameters, please consult us!

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

∆p-qV characteristic curves with cracking pressure

Size 6

Size 8

Size 10

Size 15

Size 20

Size 25

Size 30

Without spring

With spring

With piston bore/orifice

Dimensions in mm

NG			6	8		10	15	20	25	30
ØD1		mm	22.5	28	34	34	42	52	68	74.5
D2	G		G1/4	G3/8	-	G1/2	G3/4	G1	G1 1/4	G1 1/2
	M		M14 x 1,5	M18 x 1,5	-	M22 x 1.5	M27 x 2	M33 x 2	M42 x 2	M48 x 2
	UNF/UN		-	-	3/4-16 UNF	3/4-16 UNF	1 1/6-12 UN	1 5/16-12 UN	1 5/8-12 UN	1 7/8-12 UN
L1	G	mm	58	58	-	72	88	98	120	132
	M	mm	58	58	-	72	88	98	120	132
	UNF/UN	mm	-	-	66	72	92	105	120	132
L1		mm	-						160 1)	168 1)
L2		mm	10.5	11.5	13	13	15.5	19	25	28
T1	G	mm	13	13	-	15	18	19	22	22.5
	M	mm	12	12	-	14	16	18	20	22
	UNF/UN	mm	-	-	15	15	20	20	20	20
SW	G	mm	19	24	30	30	36	46	60	65

1)	Version "...A80..."