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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 OptionsCan be mounted close to actuator, reducing length of pipe to be pressurized/exhausted on each cycle
Pilot SupplyInternal or external; easily field-convertible for use with an external pilot supply
High VelocityNear zero leakage
Positive SealingNo sliding action to prevent damage and wear
ReliabilityConsistent 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 VALVES2-Way 2-Position Valves
SizeFunctionValve Model Number
BodyPort 1Port 2NPT ThreadG Thread
24 V DC110-120 V AC230 V AC24 V DC110-120 V AC230 V AC
3/81/41/4NC2171B2901W2171B2901Z2171B2901YD2171B2901WD2171B2901ZD2171B2901Y
3/83/8NC2171B3906W2171B3906Z2171B3906YD2171B3906WD2171B3906ZD2171B3906Y
1/21/2NC2171A4917W2171A4917Z2171A4917YD2171A4917WD2171A4917ZD2171A4917Y
3/43/43/4NC2171B5905W2171B5905Z2171B5905YD2171B5905WD2171B5905ZD2171B5905Y
11NC2171B6904W2171B6904Z2171B6904YD2171B6904WD2171B6904ZD2171B6904Y
1-1/411NC2171B6916W2171B6916Z2171B6916YD2171B6916WD2171B6916ZD2171B6916Y
1-1/41-1/4NC2171B7901W2171B7901Z2171B7901YD2171B7901WD2171B7901ZD2171B7901Y
1-1/21-1/2NC2171B8906W2171B8906Z2171B8906YD2171B8906WD2171B8906ZD2171B8906Y
NO2172B8900W2172B8900Z2172B8900YD2172B8900WD2172B8900ZD2172B8900Y
21-1/21-1/2NC2171B8900W2171B8900Z2171B8900YD2171B8900WD2171B8900ZD2171B8900Y
2-1/22-1/2NC2171B9901W2171B9901Z2171B9901YD2171B9901WD2171B9901ZD2171B9901Y
SizeFunctionFlow C V  (Nl/min)Average Response ConstantsWeight lb (kg)
BodyPort 1Port 2USAF
3/81/41/4NC2.1 (2066)ten0.963.0 (1.4)
3/83/8NC2.6 (2558)ten0.90
1/21/2NC2.6 (2558)ten0.82
3/43/43/4NC7.8 (7675)140.393.3 (1.5)
11NC8.3 (8167)140.32
1-1/411NC20 (19680)140.317.5 (3.4)
1-1/41-1/4NC30 (29520)260.19
1-1/21-1/2NC31(30504)260.14
NO21 (20664)260.17
21-1/21-1/2NC57 (56088)####15.5 (6.9)
2-1/22-1/2NC64 (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 VALVES3-Way 2-Position Valves
SizeFunctionValve Model Number
BodyPort 1Port 2Port 3                                    NPT ThreadG Thread
24 V DC110-120 V AC230 V AC24 V DC110-120 V AC230 V AC
3/81/41/41/2NC2173B2900W2173B2900Z2173B2900YD2173B2900WD2173B2900ZD2173B2900Y
3/83/81/2NC2173A3908W2173A3908Z2173A3908YD2173A3908WD2173A3908ZD2173A3908Y
1/21/21/2NC2173B4901W2173B4901Z2173B4901YD2173B4901WD2173B4901ZD2173B4901Y
3/41/21/2firstNC2173B4902W2173B4902Z2173B4902YD2173B4902WD2173B4902ZD2173B4902Y
1/21/2firstNO2174A4912W2174A4912Z2174A4912YD2174A4912WD2174A4912ZD2174A4912Y
3/43/4firstNC2173B5900W2173B5900Z2173B5900YD2173B5900WD2173B5900ZD2173B5900Y
111NC2173B6901W2173B6901Z2173B6901YD2173B6901WD2173B6901ZD2173B6901Y
1-1/4111-1/2NC2173B6902W2173B6902Z2173B6902YD2173B6902WD2173B6902ZD2173B6902Y
111-1/2NO2174A6914W2174A6914Z2174A6914YD2174A6914WD2174A6914ZD2174A6914Y
1-1/41-1/41-1/2NC2173B7901W2173B7901Z2173B7901YD2173B7901WD2173B7901ZD2173B7901Y
1-1/41-1/41-1/2NC2173A7917W2173A7917Z2173A7917YD2173A7917WD2173A7917ZD2173A7917Y
1-1/21-1/21-1/2NC2173B8900W2173B8900Z2173B8900YD2173B8900WD2173B8900ZD2173B8900Y
2222-1/2NC2173A9905W2173A9905Z2173A9905YD2173A9905WD2173A9905ZD2173A9905Y
2-1/22-1/22-1/2NC2173A9906W2173A9906Z2173A9906YD2173A9906WD2173A9906ZD2173A9906Y
SizeFunctionFlow C V  (Nl/min)
Average Response Constants
Weight lb (kg)
BodyPort 1Port 2Port 3USAF
1-22-3
1-22-3
3/81/41/41/2NC2.4 (2362)3.4 (3346)ten1.762.083.0 (1.4)
3/83/81/2NC3.0 (2952)5.8 (5707)ten0.951.07
1/21/21/2NC3.0 (2952)5.2 (5117)ten0.940.98
3/41/21/21NC6.6 (6494)12 (11808)110.580.643.3 (1.5)
1/21/21NO6.5 (6396)7.0 (6888)110.580.64
3/43/41NC7.8 (7675)13 (12792)110.380.41
111NC7.5 (7380)12 (11808)110.240.36
1-1/4111-1/2NC24 (23616)40 (39360)280.160.187.5 (3.4)
111-1/2NO15 (14760)17 (16728)280.160.18
1-1/41-1/41-1/2NC29 (28536)39 (38376)280.120.17
1-1/41-1/41-1/2NO21 (20664)23 (22632)280.150.19
1-1/21-1/21-1/2NC30 (29520)38 (37392)280.120.16
2222-1/2NC70 (68880)70 (68880)######16.5 (7.4)
2-1/22-1/22-1/2NC70 (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 VALVES2-Way 2-Position Valves
SizeFunctionValve Model Number
BodyPort 1Port 2NPT ThreadG Thread
3/81/41/4NC2151A2901D2151A2901
1/21/2NC2151A4910D2151A4910
3/41/21/2NC2151B4904D2151B4904
3/43/4NC2151A5913D2151A5913
3/43/4NO2152A5901D2152A5901
11NC2151B6900D2151B6900
1-1/411NC2151A7909D2151A7909
1-1/41-1/4NC2151B8900D2151B8900
1-1/21-1/2NO2152B7900D2152B7900
SizeFunctionFlow

C V  (Nl/min)

Average response constantWeight lb (kg)
BodyPort 1Port 2USAF
3/81/41/4NC2.1 (2066)ten0.961.8 (0.8)
1/21/2NC3.0 (2952)ten0.90
3/41/21/2NC6.9 (6790)ten0.824.5 (2.0)
3/43/4NC7.8 (7675)140.39
3/43/4NO7.0 (6888)140.37
11NC8.3 (8167)140.19
1-1/411NC30 (29520)260.1411.0 (5.0)
1-1/41-1/4NC31 (30504)260.13
1-1/21-1/2NO23 (22632)260.17
*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 VALVES3-Way 2-Position Valves
SizeValve Model Number
BodyPort 1Port 2Port 3NPT ThreadG Thread
3/81/41/41/22153B2900D2153B2900
3/83/81/22153A3913D2153A3913
1/21/21/22153B4903D2153B4903
3/43/43/412153B5903D2153B5903
1112153A6906D2153A6906
111-1/22153C6905D2153C6905
1-1/41-1/41-1/41-1/22153A7906D2153A7906
1-1/21-1/21-1/22153B8900D2153B8900
222-1/22153A9903D2153A9903
22-1/22-1/22-1/22153A9902D2153A9902
SizeFlow C V  (Nl/min)Average response constantWeight lb (kg)
BodyPort 1Port 2Port 3USAF
Weight
lb (kg
1-22-31-22-3
3/81/41/41/22.4 (2362)3.4 (3346)ten1.602.301.8 (0.8)
3/83/81/22.4 (2362)3.4 (3346)ten0.951.07
1/21/21/23.0 (2952)5.2 (5117)ten0.940.98
3/41/21/217.8 (7675)13 (12792)110.380.414.5 (2.0)
3/43/417.4 (7282)12 (11808)110.240.36
11124 (23616)40 (39360)280.170.20
1-1/4111-1/229 (28536)39 (38376)280.150.1911.0 (5.0)
1-1/41-1/41-1/230 (29520)38 (37392)280.120.16
1-1/21-1/21-1/230 (29520)38 (37392)280.120.16
2222-1/270 (68880)70 (68880)######15.3 (6.9)
2-1/22-1/22-1/270 (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

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