Home » Documentation » FAQ
Please choose your international ROSS contact
ROSS EUROPA GmbH

Robert-Bosch-Strasse 2

63225 Langen

Phone: +49 6103 7597 100
Fax: +49 6103 7597 299
INDUKONT Antriebstechnik Ges.m.b.H

Badenerstraße 40

2514 Traiskirchen; Österreich

Phone: +43 2252 811 18 0
Fax: +43 2252 811 18 99
ROSS EUROPA
Rep. for Glass & Steel
NILS + ABBAS TRADING Co.L.L.C.

P.O.Box 113400

Musaffah M3/7, U.A.E.

Phone: +971 2 5538266
Fax: +971 2 5597454
Mobile: +971 52 9047887
SERVICE HYDRO

Boterhamvaartweg 2

2030 Antwerpen; Belgique

Phone: +32 3 5464080
Fax: +32 3 5464081
ROSS SOUTH AMERICA Ltda.

Rua Olavo Gonçalves, 43

Centro - São Bernardo do Campo

São Paulo, Brazil CEP 09725-020

Phone: +55 11 4335 2200
Fax: +55 11 4335 3888
ASSA NS LTD

Str. "Nedelcho Bonchev" 8

Sofia 1528, Bulgaria

Phone: 00359-89-8563671
ROSS CANADA

26 Saunders Rd.

Barrie, Ontario L4N 9A8 Canada

Phone: 001-416-251-7677
Fax: 001-416-251-6677
ROSS CONTROLS (CHINA) Ltd.

No. 6 Lane 88 Fengnian Road

Ma Lu Town, Jia Ding District

Shanghai, China

Phone: +86 21 6915 5551
Fax: +86 21 6915 7960
Roztocil Milan

Brigádnická ul. 424

267 62 Kamárov

Czech Republic

Phone: +420 311 57 27 49
Fax: +420 311 57 27 49
Mobile: +420 604 673 150
OEM AUTOMATIC KLITSØ A/S

Engholm Parkvej 4

DK - 3450 Allerød

Phone: +45 701064 00
Fax: +45 701064 10
RAMINA Trading Engineering Co.

3 Serag Mounir St.

Ramleh Station

21131 Alexandria; Egypt

Phone: +203 4863724
Fax: +203 4879365
Mobile: +2 012 11170911
OY HYDRO-MATERIAL AB

Ruohosuontie 3

02580 Siuntio; Finland

Phone: +358 10 574 2500
ROSS FRANCE S.A.S

69 / 73, Boulevard Victor Hugo

Bâtiment 6-8

93400 Saint-Ouen; France

Phone: +33 1 49456565
Fax: +33 1 49456530
G. ECONOMOU - REPRESENTATIONS

13, Gr. Lambraki Str.

14561 Kifisia (near Athens); Greece

Phone: +30 1 8014808
Fax: +30 1 6236521
SYNCHRODAN Ltd.

Sorház utca 7/4

1103 Budapest; Hungary

Phone: +36 1 265 0677
Fax: +36 1 265 0677
ROSS CONTOLS INDIA Pvt. Ltd.

Plot No. 113

Ambattur Industrial Estate

Chennai 600 058, India

Phone: +91 44 2624 9040
Fax: +91 44 2625 8730
L.Y.A. Co. Ltd.

9 Pesach Lev St.

I.Z.North

Lod 71293 - Israel

Phone: +972 73 257 0000
Fax: +972 73 257 0099
FLUID CONTROL s.r.l.

Via Quintiliano 34

20138 Milano; Italy

Phone: +39 02 55400101
Fax: +39 02 55400119
ROSS ASIA K.K.

1-10-12 Tana-Shioda,

Sagamihara-shi

Kanagawa 229-1125, Japan

Phone: +81 42778 7251
Fax: +81 42778 7256
Al Sultan Company

408 Prince Hassan Street (Madaba Street)

P.O.Box 620996

Amman 11162, Jordan

Phone: 00962-6-4753764
Fax: 00962-6-4753501
Mobile: 00962-79-5678299
ROSS EUROPA
Rep. for Glass & Steel
NILS + ABBAS TRADING Co.L.L.C.

P.O.Box 113400

Musaffah M3/7, U.A.E.

Phone: +971 2 5538266
Fax: +971 2 5597454
Mobile: +971 52 9047887
UNIGIDA

Marijonu 36

LT-35138 Panevezys, Lithuania

Phone: +370 687 35174
Fax: +370 45 462634
HO-MATIC AG STEUERUNGSTECHNIK

Alte Obfelderstraße 55

8910 Affoltern a.A.; Schweiz

Phone: +41 43 3227080
Fax: +41 43 3227088
UNIGIDA

Marijonu 36

LT-35138 Panevezys, Lithuania

Phone: +370 687 35174
Fax: +370 45 462634
SERVICE HYDRO

Boterhamvaartweg 2

2030 Antwerpen; Belgique

Phone: +32 3 5464080
Fax: +32 3 5464081
BIBUSRomicon

Vlijtweg 10A

8191 JP Wapenveld, Niederlande

Phone: +31 38 4479181
Fax: +31 38 4479182
KOLBERG CASPARY LAUTOM A/S

Røykenveien 17

1386 Asker; Norway

Phone: +47 66 753000
Fax: +47 66 753001
ROSS EUROPA
Rep. for Glass & Steel
NILS + ABBAS TRADING Co.L.L.C.

P.O.Box 113400

Musaffah M3/7, U.A.E.

Phone: +971 2 5538266
Fax: +971 2 5597454
Mobile: 971 52 9047887
COMPLAST Spólka z. oo.

ul. Fort Wola 22

00-961 Warszawa; Poland

Phone: +48 22 634 4784
Fax: +48 22 634 4782
aircontrol industrial, s.l.

Paseo Sarroeta no. 4

Barrio Martutene

20014 San Sebastián; Spain

Phone: +34 943 445080
Fax: +34 943 445153
ROSS EUROPA
Rep. for Glass & Steel
NILS + ABBAS TRADING Co.L.L.C.

P.O.Box 113400

Musaffah M3/7, U.A.E.

Phone: +971 2 5538266
Fax: +971 2 5597454
Mobile: +971 52 9047887
Casel Prodimpex srl

str. Mioritei nr. 1

Cluj-Napoca CLUJ 400380 Romania

Phone: +40 264 598 234
Fax: +40 264 598 234
Interpromtechnika

Krasnogvardejskij lane 15A

197342 St. Petersburg, Russland

Phone: +7 812 318 02 92
Fax: +7 812 318 02 92
Addamegh for Industrial Solutions

P.O.Box 6570

Dammam 31452

Phone: +966 3 8335035
Phone: +966 3 8332791
Fax: +966 3 8342782
Electro Pneumatic Solutions DOO Beograd

Daničareva 16

11000 Beograd, Serbia

Phone: 00381-11-324-5552
Roztocil Milan

Brigádnická ul. 424

267 62 Komárov

Czech Republic

Phone: +420 311 572 749
Fax: +420 311 572 749
Mobile: +420 604 673 150
FLUIDIKA LJUBLJANA d.o.o.

Trzaska 2

1000 Ljubljana; Slovenia

Phone: +386 1 4214575
Fax: +386 1 2511757
aircontrol industrial, s.l.

Paseo Sarroeta no. 4

Barrio Martutene

20014 San Sebastián; Spain

Phone: +34 943 445080
Fax: +34 943 445153
TOX AB / RUDOLF WESTERBERG

Servogatan 14

SE-19560 Arlandastad; Sweden

Phone: +46 8 653 32 09
Fax: +46 8 650 27 45
HO-MATIC AG STEUERUNGSTECHNIK

Alte Obfelderstraße 55

8910 Affoltern a.A.; Schweiz

Phone: +41 43 322 70 80
Fax: +41 43 322 70 88
TEKNO KONTROL

Necatibey Cad. Aynali Lokanta

Sok. No. 30

80030 Karaköy, Istanbul/Turkey

Phone: +90 212 293 3560
Fax: +90 212 249 6437
Engineering-Production Group (EPG)

Tarasa Bul'by_Borovtsya str. 2/5,

10031, Zhytomyr, Ukraine

Phone: +380 67-390 5572
Phone: +380 412 550 320
ROSS UK Limited

Unit 7A Zone 4 Burntwood Business Park, Burntwood, Staffordshire, WS7 3XD, United Kingdom

Phone: +44 1543 671495
Fax: +44 1543 674054
ROSS CONTROLS®

1250 Stephenson Highway

Troy, Michigan 48083; USA

Phone: +1 248 764 1800
Fax: +1 248 764 1850
ROSS EUROPA
Rep. for Glass & Steel
NILS + ABBAS TRADING Co.L.L.C.

P.O.Box 113400

Musaffah M3/7, U.A.E.

Phone: +971 2 5538266
Fax: +971 2 5597454
Mobile: +971 52 9047887

Frequently Asked Questions:

General

  • What do letters “D” or “C” as first digits of the model number mean?

    Model Numbers preceded by letters „D“ or „C“, respectively, characterize parallel threads according to ISO 228/1. Other thread types are available. Please contact ROSS for details.

  • How are ports designated?

    The valve symbols shown in our documentation are designated in accordance with specifications of International Organization for Standardization, ISO 1219, 1976. Valve ports comply with ISO/TC 131, CETOP recommendation RP 86, amendment 1975.05.05.

    1 (P) is the inlet or supply port.
    2 (A) is an outlet port.
    3 (R) is an exhaust port.
    4 (B) is an outlet port.
    5 (S) is an exhaust port.

  • What do the figures describing the valve function mean (2/2, 3/2, 4/2, 5/2, 5/3)?

    The first figure defines the number of pneumatic ports, the second defines the number of valve positions. 

    Example: A 2/2 way valve has 2 outlet ports and is designed to take 2 positions.

  • What do abbreviations NC and NO mean?

    NC - „Normally Closed“ means that the valve is in closed position when no energy is supplied. 

    NO - „Normally Open“ means that the valve is in the open position when no energy is supplied. 

  • What is the difference between external and internal pilot supply?

    In case of a valve with internal pilot supply, compressed air for the control of the pilot valve is internally diverted from the main air supply (1). In case of a valve with external pilot supply, compressed air for the pilot valve is supplied through a separate port at the valve or sub-base. 

  • What does ND – Nominal Diameter - mean?

    Nominal diameter refers to the narrowest area in the valve, in most cases this is the valve seat. While the port size may be G 3/4, the ND may be only 0.8 mm. 

  • How is flow rating calculated for ROSS valves?

    The formula to be used for flow calculation, can be found here.

  • What are the mounting options for ROSS valves?

    It is preferred that the valves be mounted with the pilot section up, but sideways and upside-down is okay. 

  • What media, besides air, can be used in ROSS valves?

    Although, compressed air is the usual medium, nitrogen, carbon dioxide, argon or any inert gas can be used. Please ask your ROSS service point or Technical Services at ROSS for details.

  • Can ROSS valves be vacuum-operated?

    Ross offers valves specifically suited and designed for vacuum service. Please check for further information with your ROSS service point or Technical Services at ROSS.

  • Can I run water through my ROSS valve?

    Our valves are designed to operate on compressed air. If the application requires the valve to control the flow of a liquid, please contact your ROSS service point or Technical Services at ROSS

  • What does AC and DC mean in connection with electrical power supply?

    AC is the abbreviation for Alternating Current; e.g. 230V power supply in households. DC means Direct Current; e.g. 12 V/ DC supply for the car.

  • What solenoid voltages are available for ROSS valves?

    ROSS valves are available for all standard voltages and a number of other voltages. For any specific voltages, please contact your ROSS service point.

  • What about spare part kits for ROSS valves?

    Specific spare parts are available for many ROSS valves. We offer ROSS seal kits (including all sealing elements) or service kits (including seals and moving parts), respectively. 

    All valves can be sent to ROSS EUROPA’s repair-and-service department at the company’s headquarters in Langen. Here the valve is checked and repaired by experienced pneumatics experts, newly granted functional warranty is issued. If repair is found to be not reasonable, it is recommended to buy a new, fully warranted valve.

  • Can the valve body be exchanged?

    If a new valve body is required for the valve, it would be better to purchase a new valve with full warranty.

  • How do I get my EEZ-ON®-Valve for gradual pressure buildup to shift?

    If you are having problems getting your EEZ-ON® valve to shift to the full open position, there are a couple of things that may be the cause of the problem.   

    1. The downstream volume you are trying to fill may be too large. When the EEZ-ON® valve is signaled to shift to the on position, it initially bypasses air downstream through a metered orifice. The metering is adjusted by turning the adjusting needle: Turning the adjusting needle counterclockwise increases the flow through the orifice by opening the orifice wider. The maximum flow through the bypass orifice is 30%. The EEZ-ON® requires the downstream pressure to fill up to approximately 50% of inlet pressure, then the valve opens fully.  Of course, the larger the volume to be filled downstream, the longer the valve will take to shift. If the main supply air is dumped, the process starts over.
    2. A similar situation occurs when there are leaks downstream that add up to a leak larger than the flow through the bypass orifice in the EEZ-ON® valve. Essentially, the downstream air can escape to atmosphere faster than the bypass orifice can build pressure downstream. The result is an EEZ-ON® valve that won’t shift. On very large systems, the leaks may be small, but the sheer number of leaks add up. Another thing to look for is devices that constantly leak by, such as air motors. In the case of an air motor, an isolating valve might have to be installed so that the motor can be shut off until full system pressure is achieved.
  • Why does the air cylinder jerk as it is extending or retracting instead of moving smoothly?

    Such an effect may occur, when sticking friction is much larger than sliding friction of the piston in the cylinder tube. This effect, commonly known as “stick-slip-effect”, is triggered by air supply of the cylinder below normal level. In order to avoid this effect, cylinder exhaust air is adjusted through speed control valves. Adjustment of supply air must be avoided.

To top

ANSI-Valves

  • What is an ANSI valve?

    A base-mount valve / manifold conforming to the ANSI standard (American National Standards Institute). 

  • How do I convert my ROSS ANSI valve to external pilot supply?

    See Bulletin 331G "Service and Installation Manual" for instructions.

  • Can I plug port numbers Y-14 and Y-12 on my ANSI base?

    No, these are the pilot exhaust ports. Plugging these ports, results in valve malfunction. In order to avoid contamination, we recommend to use a silencer.

  • What do the numbers 1, 2, 3, 4 and 5 mean on my ANSI base?

    These are the port markings for the mounted valve.

    1 (P) is the inlet or supply port.
    2 (A) is an outlet port.
    3 (R) is an exhaust port.
    4 (B) is an outlet port.
    5 (S) is an exhaust port.  

  • How do I hook up the wires on my ANSI valve?

    The ANSI valve has two sets of wires, two are black and two are white. The two black wires go to the control 14 pilot and the two white wires go to the control 12 pilot. If you have a single solenoid valve, you only need the two black wires. This information is also inside the conduit cover of the ANSI base or manifold. 

To top

ISO-Valves

  • What is an ISO valve?

    ISO is the abbreviation for „International Standards Organization“. ROSS ISO valves conform to a specific mounting footprint set forth by the ISO organization.

     

     

  • What do the numbers 1, 2, 3, 4 and 5 mean on my ISO base?

    These are port markings for the mounted valve.

    1 (P) is the inlet or supply port.
    2 (A) is an outlet port.
    3 (R) is an exhaust port.
    4 (B) is an outlet port.
    5 (S) is an exhaust port.

To top

Double valves / Press safety valves

  • Why does the DM2 valve not shift after start-up and locks out instead?

    If the DM2 does not shift after start-up, but takes the “lock-out” position instead, air supply should be verified, and piping to the valve is recommended to be checked for correct dimension. The DM2 valve requires 2-8 bar, volume flow in the adequate nominal size.

  • What does it mean if air is escaping out the back of the L-G monitor?

    The valve is locked out and must be reset with at least 4.2 bar air.

  • What is the difference between the E-P, L-G and the D-S monitor valves?

    The E-P monitor valve is equipped with pneumatic sensing and electric reset.

    The L-G monitor valve is equipped with pneumatic sensing and pneumatic reset.

    The D-S monitor valve is designed for electronic sensing and is reset by closing a dry switch.

  • Why does the monitoring unit of a double valve lock-out?

    A monitor lock-out occurs when the main piston assemblies inside the valve body fail to move at the same time.  The reason could be air-line contamination, overlubrication, burnt out solenoid or actual internal parts failure. Please see the valve service bulletin for more information about your particular style of valve. Your local distributor can send you the bulletin, or contact Customer Service at ROSS EUROPA.

  • Why do I need a monitored valve on my press?

    Valid accident prevention legislation requires air-controlled clutch-and-brake systems in power presses to be equipped with monitored double valves, so that in case of a valve failure any further press cycle will be ruled out. Most ROSS double valves are certified by the competent accident preventation bodies (e.g. Deutsche Gesetzliche Unfallversicherung/BG – German Accident Prevention Authority).

To top

Inline-Mounting Valves

  • Why should Pilot Port Y-3 never be blocked?

    Plugging the pilot exhaust port will cause erratic valve operation. In order to avoid contamination, it is recommended to use a silencer.

  • What does X-1 and Y-3 at the line-mounting valve mean?

    These are port markings. X-1 is the pilot external supply port. Y-3 is the pilot exhaust port.

  • What do the numbers 1, 2, 3, 4 and 5 mean on my valve?

    These are valve port markings.

    1 (P) is the inlet or supply port.
    2 (A) is an outlet port.
    3 (R) is an exhaust port.
    4 (B) is an outlet port.
    5 (S) is an exhaust port.

  • How do I convert my ROSS line-mount valve to external pilot supply?

    This is a simple procedure. Please see  Bulletin 331G, Service and Installation ManualG for instructions.

  • Can I convert a 3-way normally closed valve to a 3-way normally open valve?

    Conversion is not possible. The internal passages and parts of a 3-way normally closed valve are shaped differently than those of a 3-way normally open valve.

  • Can I plug port number three on my 3-way valve and turn it into a 2-way valve?

    Such a conversion is not possible. Blocking port 3 will result in valve malfunction.

To top

© 2019 ROSS EUROPA GmbH