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Check valves, pilot operated Z2S 6

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Обратный клапан Z2S 6B1-6X/ R900347501 — это гидравлический клапан, который необходим, чтобы обеспечивать односторонний поток жидкости в гидравлических системах. Прибор изготовлен из высококачественных материалов: сталь и латунь. Благодаря этому обеспечивается его долговечность и надежность в работе.

Клапан Z2S 6B1-6X/ R900347501 применяется в гидравлических системах для предотвращения обратного потока жидкости, что может привести к повреждению оборудования и нарушению работы системы в целом. Оборудование используют в различных отраслях промышленности, в том числе машиностроение, автомобильную промышленность, а также в сельском хозяйстве и строительстве.

Характеристики и свойства обратного клапана Z2S 6B1-6X/ R900347501 включают в себя следующие показатели:

максимальное рабочее давление - 350 бар;
максимальный расход - 60 л/мин;
рабочая температура: от -30 до +80 градусов Цельсия;
прочный корпус из стали и латуни;
надежный механизм управления;
простая установка и обслуживание.

Обратный клапан Z2S 6B1-6X/ R900347501 — это надежный и эффективный элемент гидравлических систем, обеспечивающий безопасность и надежность работы оборудования. Его легко устанавливать и настраивать для работы в различных условиях.

Description

Size 6
Component series 6X
Maximum operating pressure 315 bar
Maximum flow 60 l/min

Features

Sandwich plate valve for use in vertical stackings
Porting pattern according to DIN 24340 form A (without locating hole)
Porting pattern according to ISO 4401-03-02-0-05 (with locating hole)
For the leakage-free blocking of one or two actuator ports, optional
Various cracking pressures, optional (see ordering codes)
With pre-opening, optional
Check valve installation sets available individually
Special versions on request

Product description

The isolator valve type Z2S is a releasable check valve in sandwich plate design.

It is used for the leakage-free blocking of one or two actuator ports, also in case of longer standstill times.

In direction A① to A② or B① to B②, there is a free flow; in the opposite direction, the flow is blocked.

If, for example, there is a flow through the valve in direction A① to A②, the control spool (1) is moved in the direction of the B side, opens the ball seat valve (2) and then pushes the poppet (3) off its seat. Hydraulic fluid can now flow from B➁ to B➀.

In order to allow the ball seat valve (2) to be safely closed, the control spool (1) must be hydraulically unloaded (see circuit example).

Pre-opening

Due to the pre-opening, there is a damped decompression of the pressurized liquid. Thus, possible switching shocks are avoided.

The two-stage set-up with an increased control open ratio means even low pilot pressure can be unloaded securely.

Notice:

In valves without pre-opening, sudden unloading of pent-up pressure volume may occur. Resulting switching shocks may lead to premature wear on installed components, as well as noise formation.

1	Control spool, area A2
2	Poppet, area A1
3	Stop

Type Z2S 6 A…SO40

Type Z2S 6 A…SO60

1	Control spool, area A2
2	Poppet, area A1
3	Stop
4	Control spool, area A4
5	Pre-opening, area A3

Type Z2S 6 -…SO55 (with pre-opening)

Type code

1) Corrosion-resistant surface on request: e.g."J50" thick film passivated (DIN 50979 Fe//Zn8//Cn//T0)

2) Locking pin ISO 8752-3x8-St, material no. R900005694 (separate order)

01	02	03	04		05		06	07	08	09	10
Z2S	6			–	6X	/					*

01	Check valve, Sandwich plate design	Z2S
02	Size 6	6
Leakage-free blocking
03	In channel A and B	–
	In channel A	A
	In channel B	B
Cracking pressure
04	1,5 bar	1
	3 bar	2
	6 bar	3
05	Component series 60 … 69 (60 … 69: unchanged installation and connection dimensions)	6X
06	Surface without corrosion resistance 1)	no code
Seal material
07	NBR seals	no code
	FKM seals	V
	The selection is dependent on the operating parameters (hydraulic fluid, temperature, etc.)!
Locating hole
08		no code
	With locating hole	/60
	With locating hole and locking pin ISO 8752-3x8-St 2)	/62
Special version
09	Without special version	no code
	Control open by external port G1/4 (only version "A" and "B")	SO40
	With pre-opening	SO55
	Control spool unloaded to port T	SO60
	With pre-opening and control open from channel P	SO150
	Symbols (examples) see "Symbols/Circuit diagrams"
10	Further details in the plain text	*

Technical data

general

Size			6
Weight		kg	0.8
Installation position			any
Ambient temperature range	NBR seals	°C	-30 … +80
Ambient temperature range	FKM seals	°C	-20 … +80

hydraulic

Size			6
Maximum operating pressure		bar	315
Cracking pressure 1)		bar	1.5 / 3 / 6
Maximum flow		l/min	60
Direction of flow			see symbols
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	2.8 … 500
Maximum admissible degree of contamination of the hydraulic fluid 2)			Class 20/18/15 according to ISO 4406 (c)
Area ratio	Without pre-opening		A1/A2 ~ 1/3.5 (see sectional drawing)
	With pre-opening		A3/A2 ~ 1/12.5 (see sectional drawing)
	Version "SO60"		A1/A4 ~ 1/7 (see sectional drawing)

1)	in free direction
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.

Selection of optimal sealing material also depends on the type of hydraulic fluid used.

(For applications outside these values, please consult us!)

Hydraulic fluid		Classification	Suitable sealing materials	Standards
Mineral oils		HL, HLP, HLPD	NBR, FKM	DIN 51524
Bio-degradable	Insoluble in water	HETG	NBR, FKM	VDMA 24568
	Insoluble in water	HEES	FKM	VDMA 24568
	Soluble in water	HEPG	FKM	VDMA 24568
Flame-resistant	Water-free	HFDU, HFDR	FKM	ISO 12922
Flame-resistant	Containing water	HFC (Fuchs Hydrotherm 46M, Petrofer Ultra Safe 620)	NBR	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.)! The flash point of the hydraulic fluid used must be 40 K higher than the maximum solenoid surface temperature. Flame-resistant – containing water: Maximum operating pressure 210 bar Maximum hydraulic fluid temperature 60 °C Life cycle compared to operation with mineral oil HL, HLP 30 to 100 %

Diagrams/characteristic curves

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

Δp-qV characteristic curves

Circuit example, schematic