Ross Asia 21 Series Inline Poppet Valves For Vacuum Applications

Made in Japan
Manufacturer : Ross Asia
Model : 21 series

Valves for Vacuum Applications

Vacuum service valves are ideal for lifting, holding, vacuum packaging and moving anything from large objects to tiny particles.

They also provide an effective means for leak testing. The vacuum source typically comes from either a vacuum pump or a venturi.

In vacuum service applications, the pressure within the valve is reduced below atmospheric pressure. Consequently, atmospheric pressure actually pushes air into the valve, instead of the common belief that air is “sucked” in by the vacuum.

Valves for Full Vacuum Applications

Full vacuum valves are ideal for applications where compressed air is unavailable. Full vacuum valves use the difference in

force between atmospheric pressure and the vacuum within the valve to actuate the valve. The full vacuum valve performs with atmospheric pressure in port 1 and 10 to 30 inches of Mercury vacuum in the valve body.

VALVE FEATURES
Poppet Design	Poppet construction for high dirt tolerance ROSS vacuum valves have larger orifices, allowing greater flow and easing the transport of air even though there is a small differential between the vacuum within the valve and atmospheric pressure outside the valve
Mounting Options	Can be mounted close to actuator, reducing length of pipe to be pressurized/exhausted on each cycle
Pilot Supply	Internal or external; easily field-convertible for use with an external pilot supply
High Velocity	Near zero leakage
Positive Sealing	No sliding action to prevent damage and wear
Reliability	Consistent response times over the life of the valve

Important Note:

Please read carefully and thoroughly all of the CAUTIONS, WARNINGS on the inside back cover.

Specifications

Ordering Information

2/2 Solenoid Pilot Controlled Valves for Vacuum Applications

Piping 2/2 Normally Closed (NC) or Normally Open (NO) Valves.

Pipe the unit into the system by connecting the vacuum source or pump to the normal air pressure inlet port (port 1). The normal outlet port is the work port (port 2).

Note: 2/2 vacuum valves provide only on/off control and do not have an exhaust function

SOLENOID PILOT CONTROLLED VALVES

2-Way 2-Position Valves

Size

Function

Valve Model Number

Body

Port 1

Port 2

NPT Thread

G Thread

24 V DC

110-120 V AC

230 V AC

24 V DC

110-120 V AC

230 V AC

3/8

1/4

2171B2901W

2171B2901Z

2171B2901Y

D2171B2901W

D2171B2901Z

D2171B2901Y

3/8

2171B3906W

2171B3906Z

2171B3906Y

D2171B3906W

D2171B3906Z

D2171B3906Y

1/2

2171A4917W

2171A4917Z

2171A4917Y

D2171A4917W

D2171A4917Z

D2171A4917Y

3/4

2171B5905W

2171B5905Z

2171B5905Y

D2171B5905W

D2171B5905Z

D2171B5905Y

2171B6904W

2171B6904Z

2171B6904Y

D2171B6904W

D2171B6904Z

D2171B6904Y

1-1/4

2171B6916W

2171B6916Z

2171B6916Y

D2171B6916W

D2171B6916Z

D2171B6916Y

1-1/4

2171B7901W

2171B7901Z

2171B7901Y

D2171B7901W

D2171B7901Z

D2171B7901Y

1-1/2

2171B8906W

2171B8906Z

2171B8906Y

D2171B8906W

D2171B8906Z

D2171B8906Y

2172B8900W

2172B8900Z

2172B8900Y

D2172B8900W

D2172B8900Z

D2172B8900Y

1-1/2

2171B8900W

2171B8900Z

2171B8900Y

D2171B8900W

D2171B8900Z

D2171B8900Y

2-1/2

2171B9901W

2171B9901Z

2171B9901Y

D2171B9901W

D2171B9901Z

D2171B9901Y

Size

Function

Flow C _V (Nl/min)

Average Response Constants

Weight lb (kg)

Body

Port 1

Port 2

USA

3/8

1/4

2.1 (2066)

ten

0.96

3.0 (1.4)

3/8

2.6 (2558)

ten

0.90

1/2

2.6 (2558)

ten

0.82

3/4

7.8 (7675)

0.39

3.3 (1.5)

8.3 (8167)

0.32

1-1/4

20 (19680)

0.31

7.5 (3.4)

1-1/4

30 (29520)

0.19

1-1/2

31(30504)

0.14

21 (20664)

0.17

1-1/2

57 (56088)

15.5 (6.9)

2-1/2

64 (62976)

Valve Response Time – Response Time (msec) = M + (F • V). This is the average time required to fill a volume V (cubic inches) to 90% of supply pressure or to

exhaust it to 10% of supply pressure. M and F values are shown above.

Valve Technical Data

2/2 Solenoid Pilot Controlled Valves for Vacuum Applications

Dimen

Dimensions Inches (mm)
Valve Body Size 3/8
Valve Body Size 3/4
Valve Body Size 1-1/4
Valve Body Size 2

3/2 Solenoid Pilot Controlled Valves for Full Vacuum Applications

Full Vacuum – 3/2 Normally Closed (NC) Valves

This valve functions as a normally open valve. Pipe the unit into the system by connecting the vacuum source or pump to port 3, the normal exhaust. Leave port 1 open to atmosphere, and the normal outlet remains as the work port (port 2).

Full Vacuum – 3/2 Normally Open (NO) Valves

This valve functions as a normally closed valve. Pipe the unit into the system by connecting the vacuum source or pump to port 3, the normal exhaust. Leave port 1 open to atmosphere, and the normal outlet remains as the work port (port 2).

SOLENOID PILOT CONTROLLED VALVES

3-Way 2-Position Valves

Size

Function

Valve Model Number

Body

Port 1

Port 2

Port 3

NPT Thread

G Thread

24 V DC

110-120 V AC

230 V AC

24 V DC

110-120 V AC

230 V AC

3/8

1/4

1/2

2173B2900W

2173B2900Z

2173B2900Y

D2173B2900W

D2173B2900Z

D2173B2900Y

3/8

1/2

2173A3908W

2173A3908Z

2173A3908Y

D2173A3908W

D2173A3908Z

D2173A3908Y

1/2

2173B4901W

2173B4901Z

2173B4901Y

D2173B4901W

D2173B4901Z

D2173B4901Y

3/4

1/2

first

2173B4902W

2173B4902Z

2173B4902Y

D2173B4902W

D2173B4902Z

D2173B4902Y

1/2

first

2174A4912W

2174A4912Z

2174A4912Y

D2174A4912W

D2174A4912Z

D2174A4912Y

3/4

first

2173B5900W

2173B5900Z

2173B5900Y

D2173B5900W

D2173B5900Z

D2173B5900Y

2173B6901W

2173B6901Z

2173B6901Y

D2173B6901W

D2173B6901Z

D2173B6901Y

1-1/4

1-1/2

2173B6902W

2173B6902Z

2173B6902Y

D2173B6902W

D2173B6902Z

D2173B6902Y

1-1/2

2174A6914W

2174A6914Z

2174A6914Y

D2174A6914W

D2174A6914Z

D2174A6914Y

1-1/4

1-1/2

2173B7901W

2173B7901Z

2173B7901Y

D2173B7901W

D2173B7901Z

D2173B7901Y

1-1/4

1-1/2

2173A7917W

2173A7917Z

2173A7917Y

D2173A7917W

D2173A7917Z

D2173A7917Y

1-1/2

2173B8900W

2173B8900Z

2173B8900Y

D2173B8900W

D2173B8900Z

D2173B8900Y

2-1/2

2173A9905W

2173A9905Z

2173A9905Y

D2173A9905W

D2173A9905Z

D2173A9905Y

2-1/2

2173A9906W

2173A9906Z

2173A9906Y

D2173A9906W

D2173A9906Z

D2173A9906Y

Size

Function

Flow C _V (Nl/min)

Average Response Constants

Weight lb (kg)

Body

Port 1

Port 2

Port 3

USA

1-2

2-3

1-2

2-3

3/8

1/4

1/2

2.4 (2362)

3.4 (3346)

ten

1.76

2.08

3.0 (1.4)

3/8

1/2

3.0 (2952)

5.8 (5707)

ten

0.95

1.07

1/2

3.0 (2952)

5.2 (5117)

ten

0.94

0.98

3/4

1/2

6.6 (6494)

12 (11808)

0.58

0.64

3.3 (1.5)

1/2

6.5 (6396)

7.0 (6888)

0.58

0.64

3/4

7.8 (7675)

13 (12792)

0.38

0.41

7.5 (7380)

12 (11808)

0.24

0.36

1-1/4

1-1/2

24 (23616)

40 (39360)

0.16

0.18

7.5 (3.4)

1-1/2

15 (14760)

17 (16728)

0.16

0.18

1-1/4

1-1/2

29 (28536)

39 (38376)

0.12

0.17

1-1/4

1-1/2

21 (20664)

23 (22632)

0.15

0.19

1-1/2

30 (29520)

38 (37392)

0.12

0.16

2-1/2

70 (68880)

16.5 (7.4)

2-1/2

70 (68880)

71 (69864)

Valve Response Time – Response Time (msec) = M + (F • V). This is the average time required to fill a volume V (cubic inches) to 90% of supply pressure or to

exhaust it to 10% of supply pressure. M and F values are shown above.

3/2 Solenoid Pilot Controlled Valves for Full Vacuum Applications

2/2 Pressure Controlled Valves for Vacuum Applications

Piping 2/2 Normally Closed (NC) or Normally Open (NO) Valves

Pipe the unit into the system by connecting the vacuum source or pump to the normal air pressure inlet port (port 1). The normal outlet port is the work port (port 2).

Note: 2/2 vacuum valves provide only on/off control and do not have an exhaust function.

PRESSURE CONTROLLED VALVES						2-Way 2-Position Valves
Size			Function	Valve Model Number
Body	Port 1	Port 2		NPT Thread		G Thread
3/8	1/4	1/4	NC	2151A2901		D2151A2901
	1/2	1/2	NC	2151A4910		D2151A4910
3/4	1/2	1/2	NC	2151B4904		D2151B4904
	3/4	3/4	NC	2151A5913		D2151A5913
	3/4	3/4	NO	2152A5901		D2152A5901
	1	1	NC	2151B6900		D2151B6900
1-1/4	1	1	NC	2151A7909		D2151A7909
	1-1/4	1-1/4	NC	2151B8900		D2151B8900
	1-1/2	1-1/2	NO	2152B7900		D2152B7900
Size			Function	Flow C _V (Nl/min)	Average response constant		Weight lb (kg)
Body	Port 1	Port 2			USA	F
3/8	1/4	1/4	NC	2.1 (2066)	ten	0.96	1.8 (0.8)
	1/2	1/2	NC	3.0 (2952)	ten	0.90
3/4	1/2	1/2	NC	6.9 (6790)	ten	0.82	4.5 (2.0)
	3/4	3/4	NC	7.8 (7675)	14	0.39
	3/4	3/4	NO	7.0 (6888)	14	0.37
	1	1	NC	8.3 (8167)	14	0.19
1-1/4	1	1	NC	30 (29520)	26	0.14	11.0 (5.0)
	1-1/4	1-1/4	NC	31 (30504)	26	0.13
	1-1/2	1-1/2	NO	23 (22632)	26	0.17
*Valve response time – Response time (msec) = M + (F • V). This is the average time required to fill a volume V (cubic inches) to 90% of supply pressure or to exhaust it to 10% of supply pressure. M and F values are shown above.

3/2 Pressure Controlled Valves for Vacuum Applications

Piping 3/2 Normally Closed Valves

In this valve configuration, pipe the unit into the system by connecting the vacuum source or pump to the normal air pressure inlet port (port 1). The normal outlet port is the work port (port 2), and the normal air pressure exhaust port becomes the atmosphere port (port 3).

PRESSURE CONTROLLED VALVES												3-Way 2-Position Valves
Size									Valve Model Number
Body		Port 1		Port 2			Port 3		NPT Thread				G Thread
3/8		1/4		1/4			1/2		2153B2900				D2153B2900
		3/8		3/8			1/2		2153A3913				D2153A3913
		1/2		1/2			1/2		2153B4903				D2153B4903
3/4		3/4		3/4			1		2153B5903				D2153B5903
		1		1			1		2153A6906				D2153A6906
		1		1			1-1/2		2153C6905				D2153C6905
1-1/4		1-1/4		1-1/4			1-1/2		2153A7906				D2153A7906
		1-1/2		1-1/2			1-1/2		2153B8900				D2153B8900
		2		2			2-1/2		2153A9903				D2153A9903
2		2-1/2		2-1/2			2-1/2		2153A9902				D2153A9902
Size						Flow C _V (Nl/min)				Average response constant					Weight lb (kg)
Body	Port 1		Port 2		Port 3					USA	F					Weight lb (kg
								1-2	2-3		1-2			2-3
3/8	1/4		1/4		1/2			2.4 (2362)	3.4 (3346)	ten	1.60			2.30		1.8 (0.8)
	3/8		3/8		1/2			2.4 (2362)	3.4 (3346)	ten	0.95			1.07
	1/2		1/2		1/2			3.0 (2952)	5.2 (5117)	ten	0.94			0.98
3/4	1/2		1/2		1			7.8 (7675)	13 (12792)	11	0.38			0.41		4.5 (2.0)
	3/4		3/4		1			7.4 (7282)	12 (11808)	11	0.24			0.36
	1		1		1			24 (23616)	40 (39360)	28	0.17			0.20
1-1/4	1		1		1-1/2			29 (28536)	39 (38376)	28	0.15			0.19		11.0 (5.0)
	1-1/4		1-1/4		1-1/2			30 (29520)	38 (37392)	28	0.12			0.16
	1-1/2		1-1/2		1-1/2			30 (29520)	38 (37392)	28	0.12			0.16
2	2		2		2-1/2			70 (68880)	70 (68880)	##	##			##		15.3 (6.9)
	2-1/2		2-1/2		2-1/2			70 (68880)	71 (69864)	##	##			##		15.3 (6.9)
*Valve response time – Response time (msec) = M + (F • V). This is the average time required to fill a volume V (cubic inch) to 90% of supply pressure or to discharge it to 10% of supply pressure. M and F values are shown above