FK16C32-2X/

Manufacturer: Bosch Rexroth

Material #: R900304361

Model : FK16C32-2X/

***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 FK16C32-2X/ (R900304361) is a high-quality screw-in cartridge valve designed for precise flow control and check functionalities in hydraulic systems. This throttle check valve operates based on the pressure differential between ports A and B, as well as the viscosity of the hydraulic fluid. The FK16C32-2X/ is part of the component series X, which indicates its adherence to Bosch Rexroth's rigorous performance standards. The valve features an adjustment mechanism that includes options such as a rotary knob, a lockable rotary knob with a scale, and various cracking pressures for tailored control. The throttle cross-section can be finely adjusted by axially displacing the throttle bolt to regulate flow from A to B. Additionally, it incorporates a check valve that permits free flow in the opposite direction, from B to A, ensuring efficient operation in one-way flow applications. Constructed for block installation, this model is delivered without a housing and can be directly screwed into the system block for a compact and integrated solution. The FK16C32-2X/ boasts a maximum operating pressure of up to bar and can handle maximum flow rates of l/min, showcasing its capability to function effectively under demanding conditions. With its robust design and precise adjustability features, the Bosch Rexroth FK16C32-2X/ cartridge valve is an essential component for engineers looking to achieve reliable and accurate control in their hydraulic circuits.

$3,139.00 USD

More are expected on April 22, 2025

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Status: This product is temporarily out of stock.

Qty: Delivered as early as April 22, 2025 when ordered in

This product is eligible for factory repair.

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For block installation (cartridge valve, screw-in cartridge valve) 3 adjustment types, optional• Rotary knob• Lockable rotary knob with scale• Rotary knob with scale Various cracking pressures

Type FK . C1…

Type FK . K… (Cartridge valve)

The valves type FK are throttle check valves. The flow depends on the pressure differential between A and B and on the viscosity of the hydraulic fluid.

The valves mainly consist of adjustment type (1), housing (2), throttle bolt (3) and check valve (4).

The flow is throttled from A to B. The throttle cross-section (5) is adjusted by displacing the throttle bolt (3) in axial direction. For free

flow back from B to A, a check valve (4) is installed.

Type FK . C… (Screw-in cartridge valve)

In principle, the function of these valves corresponds to the function of version "K". However, they are delivered without housing (2) and thus can be screwed into the block directly.

01	02	03	04	05		06		07	08
FK					–	2X	/		*

01	Throttle check valve	FK
02	Size 16	16
	Size 25	25
	Size 32	32

03	Cartridge valve	K
03	Cartridge valve	C
Adjustment type
04	Rotary knob	1
	Lockable rotary knob with scale	3
	Rotary knob with scale	7
Cracking pressure
05	Cracking pressure 1.5 bar (standard)	2
05	Cracking pressure 3 bar	3
06	Component series 20 ... 29 (20 ... 29: unchanged installation and connection dimensions)	2X
Seal material
07	NBR seals	no code
	FKM seals	V
	Observe compatibility of seals with hydraulic fluid used. (Other seals upon request)
08	Further details in the plain text	*

general

Size			16	25	32
Weight	Cartridge valve "K"	kg	0.8	1.7	4
Weight	Screw-in cartridge valve "C"	kg	0.4	0.7	1.7
Installation position			any
Ambient temperature range	NBR seals	°C	-30 … +80
Ambient temperature range	FKM seals	°C	-20 … +80

Hydraulic fluid		Classification	Suitable sealing materials	Standards
Mineral oils and related hydrocarbons		HL, HLP, HLPD, HVLP, HVLPD	NBR, FKM	DIN 51524
Environmentally compatible	Insoluble in water	HETG	NBR, FKM	ISO 15380
	Insoluble in water	HEES	FKM	ISO 15380
	Soluble in water	HEPG	FKM	ISO 15380
Containing water	Water-free	HFDU, HFDR	FKM	ISO 12922
Important information on hydraulic fluids! For further information and data on the use of other hydraulic fluids, please refer to data sheet 90220 or contact us! There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.)!

hydraulic

Size			16	25	32
Maximum operating pressure		bar	315
Maximum flow (standard valves)		l/min	100	200	400
Hydraulic fluid			see table
Hydraulic fluid temperature range	NBR seals	°C	-30 … +80
Hydraulic fluid temperature range	FKM seals	°C	-20 … +80
Viscosity range		mm²/s	10 … 800
Maximum admissible degree of contamination of the hydraulic fluid 1)			Class 20/18/15 according to ISO 4406 (c)
Actuating torque approx. (adjustment type)		Nm	5

1)	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.

For applications outside these parameters, please consult us!

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

Δp-qV characteristic curves ‒ NG16

Δp-qV characteristic curves ‒ NG25

Δp-qV characteristic curves ‒ NG32

Δp-qV characteristic curves, throttle closed via check valve

Cartridge valve “K”

Dimensions in mm

1	Adjustment type "1"
2	Adjustment type "7"
3	Adjustment type "3"
4	Setting range
5	Space required to remove the key
9	Valve mounting screws (cartridge valve "K")

NG	ØD1	ØD2	H1	H2	H3	H4	H5	H6	▢ L1	▢ L2	SW
NG	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm	mm
16	8.4	13.5	5.2	12	62.5	79.5	10	2	65	48	30
25	14	20	8	20	70	88	12	2	80	55	36
32	18	26	10	26	75	93	14	2	105	70	55

Installation bore
Dimensions in mm

1)	Visual inspection

6	Depth of fit
7	Port A can be positioned around the central axis of port B. (Attention! Observe the position of the mounting bores!)

Connection surface
Dimensions in mm

General tolerances ISO 2768-mK

NG	ØD3		ØD4		ØD5	ØD6	D7	H7	H8	H9	H10		H11	H12	L2
NG	mm		mm		mm	mm		mm	mm	mm	mm	mm	mm	mm	mm
16	38	H7	36	H7	15	15	M8	20.5	34	44	47	+ 0.1	16	33	48
25	52	H7	50	H7	25	20	M12	24	40.5	55	60.5	+ 0.1	19	39.5	55
32	72	H7	70	H7	35	30	M16	35	58	75	80.5	+ 0.1	26	57.5	70

Screw-in cartridge valve “C”

Dimensions in mm

1	Adjustment type "1"
2	Adjustment type "7"
3	Adjustment type "3"
4	Setting range
5	Space required to remove the key
10	Tightening torques (screw-in cartridge valve "C"):
	NG16MA = 170 Nm ±10 %, moisten thread with hydraulic fluid
	NG25MA = 305 Nm ±10 %, moisten thread with hydraulic fluid
	NG32MA = 600 Nm ±10 %, moisten thread with hydraulic fluid
	Notice!The tightening torques refer to a housing tensile strength of at least 300 N/mm2 (corresponds to GG30)

Mounting cavity
Dimensions in mm

1)	Pipe thread according to ISO 228/1

General tolerances ISO 2768-mK

7	Port A can be positioned around the central axis of port B. (Attention! Observe the position of the mounting bores!)

Valve mounting screws Cartridge valve "K" (separate order)

NG16

4 hexagon socket head cap screws

ISO 4762 - M8 x 20 - 10.9-flZn-240h-L

Friction coefficient μtotal = 0.09 to 0.14,

Tightening torque MA = 30 Nm ±10 %,

Material no. R901021242

NG25

4 hexagon socket head cap screws

ISO 4762 - M12 x 25 - 10.9-flZn-240h-L

Friction coefficient μtotal = 0.09 to 0.14,

Tightening torque MA = 102 Nm ±10 %,

Material no. R913000128

NG32

4 hexagon socket head cap screws

ISO 4762 - M16 x 35 - 10.9-flZn-240h-L

Friction coefficient μtotal = 0.09 to 0.14,

Tightening torque MA = 250 Nm ±10 %,

Material no. R913000509

Notice!

The tightening torques refer to the maximum admissible operating pressure. Friction coefficients, tightening torques, and preload forces interact with each other. For this reason, checking of the mounting characteristics with original components and boundary conditions is recommended. Tightening torques depend on the stability of the installation housing!

NG	H3	H4	H5	SW
NG	mm	mm	mm	mm
16	50.5	67.5	10	30
25	50	68	12	36
32	49	67	14	55

NG	ØD5	ØD6	ØD8		ØD9		D10	H7	H10		H13	H14		H15	H16	H17
NG	mm	mm	mm	mm	mm			mm	mm	mm	mm	mm	mm	mm	mm	mm
16	14	10	34.1	+ 0.2	28	H6	G3/4	33	48	- 0.2	26	8.2	+ 0.1	2	22	1.5
25	25	20	51.1	+ 0.2	44	H6	G1 1/4	41.5	67.5	- 0.2	27	9.4	+ 0.1	2.5	27	2
32	35	30	70.1	+ 0.2	60	H6	G 2	56	93.5	- 0.2	29	8.5	+ 0.1	2.5	36	3

FK16C32-2X/

Manufacturer: Bosch Rexroth

Material #: R900304361

Model : FK16C32-2X/

More are expected on April 22, 2025

This product is eligible for factory repair.

Type FK . C1…

general

hydraulic

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

Δp-qV characteristic curves ‒ NG16

Δp-qV characteristic curves ‒ NG25

Δp-qV characteristic curves ‒ NG32

Δp-qV characteristic curves, throttle closed via check valve

Cartridge valve “K”

Screw-in cartridge valve “C”

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