BOSCH REXROTH
R901082849

$710.97 USD

BOSCH REXROTH
Material:R901082849
Model:KRD2L2AB/LV

Quantity in stock: 0

Note: Sales tax, and shipping will be calculated at checkout.

***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 KRD2L2AB/LV (R901082849) is a high-performance screw-in cartridge valve designed to provide precise pressure reducing functions in hydraulic systems. This direct operated 3-way pressure reducing valve is engineered for maximum operating pressures of up to 350 bar (5076 psi) and can accommodate a maximum flow of 30 l/min (7.9 gpm). The valve features a cavity in accordance with ISO 7368, ensuring compatibility with standardized mounting cavities. Equipped with FKM sealing material, the KRD2L2AB/LV is suitable for use with a variety of hydraulic fluids including HL, HLP, HEES, and HEPG. The normally open spool allows for free flow from the main port P to A in its initial position. Upon reaching the set pressure value at the adjustment type, which is facilitated by a threaded pin with hexagon and protective cap, the poppet-type closing element seals off the flow to maintain consistent pressure in part A regardless of fluctuations in P. This particular model does not come with pressure presetting and operates under a direct acting pilot principle. Due to its compact design and versatile functionality, it can be employed for simple pressure-reducing tasks without leakage or oil drain requirements. The valve's weight of approximately 0.6 kg makes it suitable for various applications where space and weight are considerations. The product belongs to Bosch Rexroth's KRD product family and falls under Productgroup ID numbers 4811/4812/4813/4814/4815. It is available in three different pressure ratings: 210, 280, and 350 bar, thus offering flexibility for different system requirements. The component series B designation indicates its place within Bosch Rexroth's product line-up as an established solution for efficient hydraulic control. With its robust construction and reliable performance characteristics, the Bosch Rexroth KRD2L2AB/LV valve stands as an essential component for those looking to achieve precise control over their hydraulic system pressures without sacrificing quality or dependability.

2-way pressure reducing valve, direct operated

Unpacked Weight: 0.7942 kg

General

The direct operated 2-way pressure reducing valve type KRD is designed as tight seat valve. It is used for the leakage-free pressure reduction of a working pressure.

It basically comprises the screw-in housing (1) with spring (6) and adjustment type (5) as well as spool (3), valve seat (2) and closing element (4).

Function

In the initial position, the valve seat is open. Hydraulic fluid can flow from the main port ① to ②. If the pressure in the main port increases ② to the pressure value set at the adjustment type (5), the closing element (4) closes the connection ① to ②. The increasing system pressure (main port ①) no longer influences the pressure in main port ② (pressure holding function). Pressure losses in the main port ② (actuator) will be compensated by the valve.

technical illustration-R901082849-2-way pressure reducing valve, direct operated

➀	Main port 1 (P)
➁	Main port 2 (A)

Screw-in cartridge valve
Maximum operating pressure 400 bar (5800 psi)
Maximum flow 25 l/min (7 gpm)
Cavity R/ISO 7789-27-01-1-89

Data Sheet

Max. pressure	400
Adjustment options	Threaded pin with hexagon and protective cap
Product family classification	2-way pressure reducing valve, direct operated
Productgroup ID	9,10,11,12,13,14
Product family type	KRD
Ports number	2
Sealing material	FKM
Cavity	R/ISO 7789-27-01-1-89
Product type	KRD
Max. flow	25
Type of connection	Screw-in cartridge valve
Normal position	Normally open
Nominal flow	25
Pressure pre-setting	Without pressure pre-setting
Direct - Pilot	Direct acting
Product family	Reducing
Spool Poppet	Poppet type
Weight	0.7942
Hydraulic fluid	HL,HLP,HEES,HEPG

01	02	03	04	05	06		07	08	09
KRD			2	A	B	/	L		V

01	Pressure reducing valve, direct operated	KRD
Adjustment type
02	Rotary knob	11)
	Grub screw with hexagon and protective cap	2
	Rotary knob with scale, lockable	31)
Pressure rating
03	100 bar	F
	210 bar	L
	315 bar	P
04	Size	2
Design principle
05	Seat valve	A
06	Component series	B
07	High Performance and mounting cavity R/T-8A (see mounting cavity)	L
08	Without pressure pre-adjustment	no code
08	With pressure pre-adjustment 2)	-...
09	FKM seals	V

	1) Only with pressure rating 100 bar (“F”)
	2) Example (pressure adjustment when qV = 1 l/min up to 2 l/min):
	set to 50 bar: …/L-50V

general

Size		2
Weight	kg	1
Installation position		any

Hydraulic fluid		Classification	Suitable sealing materials	Standards
Mineral oils and related hydrocarbons		HL, HLP, HLPD, HVLP, HVLPD	FKM	DIN 51524
Environmentally compatible	Insoluble in water	HEES	FKM	ISO 15380
	Insoluble in water	HEPR	FKM	ISO 15380
	Soluble in water	HEPG	FKM	ISO 15380
Containing water	Water-free	HFDU, HFDR	FKM	ISO 12922
Containing water	Containing water	HFAS	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.)! Flame-resistant – containing water: The maximum pressure differential per control edge is 175 bar. Otherwise, there is increased cavitation erosion. Tank pre-loading < 1 bar or > 20 % of the pressure differential. The pressure peaks should not exceed the maximum operating pressures!

hydraulic

Maximum operating pressure	Main port ①	bar	400
Maximum operating pressure	Main port ②	bar	315
			Nominal pressure in A	Adjustable minimum pressure in A
Maximum set pressure 1)	Pressure rating 100 bar	bar	100	10
	Pressure rating 210 bar	bar	210	20
	Pressure rating 315 bar	bar	315	30
Maximum flow		l/min	25
Maximum admissible leakage in the application/system		l/min	1.5
Hydraulic fluid			see table
Hydraulic fluid temperature range		°C	-20 … +80
Viscosity range 2)		mm²/s	5 … 1,000
Maximum admissible degree of contamination of the hydraulic fluid 3)			Class 20/18/15 according to ISO 4406 (c)

1)	Exact pressure control at p > 20 bar is possible
2)	preferably 10 to 100 mm2/s
3)	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)

Reduced pressure dependent on the flow

Notice!

The figures show the p-qV characteristic curves of the 3 pressure ratings at the relevant rated pressures.

Recommendation for the pressure differential:

Δp ≥ 20 bar

Flow resistance Δp-qV characteristic curves

➀	Main port 1 (P)
➁	Main port 2 (A)

Dimensions in mm

➀	Main port 1 (P)
➁	Main port 2 (A)
1.1	Adjustment type “1”: rotary knob (only with pressure rating 100 bar “F”)
1.2	Adjustment type "2": grub screw with hexagon wrench size 5 and protective cap
1.3	Adjustment type “3”: lockable rotary knob with scale (only with pressure rating 100 bar “F”)
2	Plastic ring with marking (adjustment of the zero position after the valve has been screwed in, then fixing of the ring by horizontal shifting until it engages on the reducing piece)
3	Lock nut wrench size 19, tightening torque MA = 30±5 Nm
4	Lock nut wrench size 30, tightening torque MA = 100 Nm
5	Space required to remove the key
6	Hexagon wrench size 36, tightening torque MA = 170 Nm

Mounting cavity R/ISO 7789-27-01-1-98 (similar to ISO 7789-27-01-0-98): 2 main ports, thread M27 x 2