Model 210 Limit Switch
The Model 210 is a limit switch box supplied as an accessory to the electro pneumatic valve positioner range.
What This Model Does
The Model 210 is a limit switch box supplied as an accessory to the electro pneumatic valve positioner range. It bolts onto the actuator alongside the positioner and gives the control room a discrete open and closed indication of where the valve actually is. The 210 is one of five boxes in the family, alongside the 310, 410A, 410B and 510, so the same supplier covers whichever pattern your actuator already carries.
| Model | 210 |
|---|---|
| Type | Limit switch box for valve position indication |
| Family | 210, 310, 410A, 410B, 510 |
| Supplied with | Electro pneumatic valve positioners, including factory assembled with YT1000R |
| Housing colour | Painted to customer requirement on OEM orders |
| Warranty | 18 months |
| Electrical rating | Confirmed per order, ask before you specify |
Why Buyers Specify This Model
- Gives the control room a positive open and closed indication instead of a hand indicator on the valve
- Supplied as a matched accessory to the positioner range, so one order covers both
- Can be fitted on the YT1000R at the factory rather than assembled by your valve shop
- Five box patterns from one source, so a mixed fleet can be standardised over time
- Housing painted in your colour and marked with your logo on OEM orders
- Held in stock as a spare accessory, so single units ship in 2 to 3 days
Problems It Solves
- The control room cannot confirm that the valve actually reached the open or closed position
- The original switch box has failed and the plant needs the same pattern on the same bracket
- Positioner and switch box bought from two suppliers do not marry up cleanly on the actuator
- A branded product line needs the accessory to match the positioner it ships with
- A single replacement box is needed quickly and the original brand quotes weeks
Application Scenarios
- Adding open and closed position feedback to a control valve that never had a switch box
- Replacing a switch box that has failed on an actuator already in service
- Building a valve automation package where positioner and switch box ship as one assembly
- Stocking spare switch boxes for a plant that runs many pneumatic control valves
- Supplying a distributor line where the switch box has to match the positioner branding
Who It Is For
- Plant instrument technicians restoring position feedback on a control valve
- Valve and actuator assemblers fitting accessories before shipment
- EPC contractors buying switch boxes alongside positioners for a project
- Distributors stocking accessories for local process plants
- OEM customers who need the switch box in the same colour and branding as their positioners
Technical Features
- Limit switch box supplied as an accessory to the electro pneumatic valve positioner range
- One of five patterns in the family: 210, 310, 410A, 410B and 510
- Can be supplied already assembled with a YT1000R positioner
- Housing colour and nameplate marking follow the OEM order
- Contact arrangement, voltage rating and enclosure protection are confirmed per order rather than published here
Materials and Construction
- Painted metal housing with a domed position indicator
- Full material and enclosure detail is confirmed per order rather than published on this page
Dimensions and Connection Detail
Reference image published with this model on the original catalogue. Confirm critical dimensions against the datasheet before machining a bracket.
Manufacturing and Quality Control
Every unit is calibrated and stroke tested before it is packed. We can film or photograph your units in the sample room or warehouse before they ship.
Manufacturing Steps
Moulding of plastic housing
Assembly of switch contacts and actuator lever
Mounting bracket alignment and testing
Electrical continuity test on all contacts
Final inspection and packing in stock or custom cartons
Quality Control
- Boxes are checked before packing and can be photographed or filmed in the warehouse on request
- Faulty units inside the 18 month warranty are replaced on photo or video evidence rather than repaired
- Replacements normally ship with your next order, or immediately when the plant is down
Customisation Options
- Housing colour can be painted to customer requirement (black, blue, yellow, or other)
- Customer logo and nameplate marking available
- Custom packaging and carton design for bulk orders
- Supplied with or without mounting bracket depending on model
How It Compares With the Alternatives
| Model 410A and 410B | The 410 boxes are the pattern most often factory assembled onto the YT1000R; the 210 suits actuators already carrying that pattern |
|---|---|
| Position transmitter module | A switch box reports two discrete states; a transmitter module reports continuous position, which matters only when the control system uses the intermediate value |
| No feedback at all | Without a box the control room infers valve position from the signal it sent, which is exactly the assumption that fails when a valve sticks |
Fitting and Setting Up This Model
General field procedure. Always follow the datasheet for the exact calibration sequence and any hazardous area requirements.
Mount the box on the actuator bracket and couple the shaft or lever to the valve stem
Stroke the valve to the closed position and set the closed cam or trip point
Stroke to the open position and set the open trip point
Cycle the valve twice and confirm both indications repeat
Confirm the electrical rating with us before wiring it into your control circuit
Model 210 Limit Switch FAQ
Which switch box do I need?
Send a photo of the actuator and the existing box on WhatsApp. The family covers 210, 310, 410A, 410B and 510 and we will confirm which pattern matches.
What are the contact rating and enclosure protection?
We do not publish those figures on this site. Tell us the control circuit and area classification you have to meet and we will confirm in writing before you order.
Can it come already fitted to the positioner?
Yes. The YT1000R is supplied factory assembled with a 210, 410A or 410B box, or with a position transmitter module.
How quickly can you ship one?
Spare accessories are held in stock, so single units and small orders normally ship in 2 to 3 days. Large quantities take 7 to 10 days.
Can we have it in our own colour and branding?
Yes. Housing colour and nameplate marking follow your OEM specification, the same as the positioners.
What is the warranty?
18 months. Send photos or a short video of a failed unit and we ship a replacement rather than asking you to return it.
Applications Cases and Guides
Related Products
Get A Price on This Model
Tell us the quantity, the actuator it goes on and the destination port. We come back with price, lead time and confirmation that the model matches your valve.