Model 310 Limit Switch
The Model 310 Limit Switch is an accessory designed for electro pneumatic valve positioners.
What This Model Does
The Model 310 Limit Switch is an accessory designed for electro pneumatic valve positioners. It mounts alongside the positioner and actuator assembly to provide discrete electrical position feedback from automated valves to plant control systems. Supplied as part of a series that includes models 210, 310, 410A, 410B, and 510, the Model 310 confirms open and closed valve status for process interlocks and remote monitoring.
| Model | Model 310 |
|---|---|
| Product type | Limit switch box |
| Application | Accessory of electro pneumatic valve positioner |
| Related series models | 210, 310, 410A, 410B, 510 |
| Housing colour options | Black, blue, yellow, and painted to customer requirement |
| Warranty | 18 months |
Why Buyers Specify This Model
- Operates as a dedicated accessory for electro pneumatic valve positioners across control valve automation assemblies
- Provides discrete position confirmation back to the control system or DCS for safety interlocks
- Available within a standardized accessory range including models 210, 310, 410A, 410B, and 510
- Can be supplied assembled directly with electro pneumatic positioners and pneumatic valve actuators
- Shortens maintenance lead times with regular models and spare accessories held in factory stock
- Custom paint finishes and branding allow seamless integration into OEM valve and actuator packages
- Backed by an 18 month replacement warranty on photo or video evidence
Problems It Solves
- Control room lacks positive electrical confirmation of end-of-stroke valve position
- Original brand switch box accessories face extended lead times from overseas suppliers
- Valve packagers need switch accessories finished in matching custom housing colours
- Sourcing positioners and limit switch accessories from mismatched suppliers complicates installation
- Plant downtime caused by delays in obtaining replacement switch boxes for automated valves
Application Scenarios
- Fitting position feedback switches directly to an electro pneumatic valve positioner assembly
- Replacing a damaged or worn limit switch box on an existing automated valve package
- OEM automated valve assembly where both positioner and limit switch box must ship under one brand
- Control valve skids requiring separate discrete open and close signals in addition to analog position control
- Distributor stock orders for standard positioner accessories across industrial process plants
Who It Is For
- Valve and actuator OEMs assembling control valve packages with positioners and switch boxes
- Plant instrument technicians replacing worn limit switch accessories on existing positioners
- EPC contractors sourcing valve positioner accessories for process plant installations
- Distributors stocking electro pneumatic positioner accessories and replacement limit switches
- Trading companies supplying spare parts and automation components to process facilities
Technical Features
- Engineered as an accessory for electro pneumatic valve positioners
- Designed for integration on automated valve and pneumatic actuator packages
- Part of the multi-model series encompassing 210, 310, 410A, 410B, and 510
- Housing can be finished in standard black, blue, yellow, or custom specified paint colours
- Compatible with OEM custom nameplates, logos, and newly designed shape modules
Materials and Construction
- Painted housing with custom color options including black, blue, and yellow
- Full material and finish breakdown is given in the datasheet PDF
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
Housing casting and precision mechanical finishing
Switch element and terminal strip internal assembly
Housing surface preparation and painting in black, blue, yellow, or custom colors
Mechanical trip and contact continuity verification
Application of OEM nameplates and customer branding markings
Packing into standard or customized shipping cartons
Quality Control
- Every unit is checked for electrical continuity and mechanical switching before dispatch
- Sample room or warehouse photos and videos can be provided to verify units before shipping
- Faulty units under the 18 month warranty are replaced on photo or video evidence without return
- Replacement units typically ship alongside the customer next order or expedited for plant emergencies
Customisation Options
- Customer logo and model identification printed on the nameplate
- Housing painted in customer specified colours such as blue, black, or yellow
- Newly designed shape modules developed to customer drawings and specifications
- Custom carton and protective packaging configurations
- Pre-assembly with electro pneumatic valve positioners and pneumatic actuators
How It Compares With the Alternatives
| Stand-alone valve positioner without limit switch | The positioner modulates valve position, while the Model 310 adds independent discrete limit contacts back to the control system |
|---|---|
| Model 210 limit switch box | The 310 provides an alternative housing configuration within the same accessory family depending on mounting and space requirements |
| Model 410A and 410B limit switch boxes | The 410 series offers different enclosure profiles and ratings within the accessory lineup to suit specific positioner combinations |
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 Model 310 switch box to the electro pneumatic positioner or actuator bracket
Align the switch drive shaft with the positioner feedback spindle or actuator stem
Open the housing cover to access the terminal block and switch adjustment cams
Wire field signal cables through the conduit entry to the appropriate switch terminals
Manually stroke the valve to open and closed positions to calibrate the switch trip points
Secure the housing cover tightly before energizing to protect internal contacts
Model 310 Limit Switch FAQ
What is the delivery lead time for the Model 310?
Delivery is normally 2 to 3 days for regular quantities from stock. Large orders typically ship in 7 to 10 days.
Is the Model 310 compatible with electro pneumatic valve positioners?
Yes. The Model 310 is designed specifically as an accessory for electro pneumatic valve positioners.
Can the housing be painted to match our company equipment colour?
Yes. Housings can be painted in standard black, blue, yellow, or custom colours to match your requirement.
What other switch models are available in this family?
The accessory range includes Model 210, Model 310, Model 410A, Model 410B, and Model 510.
What warranty covers the Model 310 Limit Switch?
We provide an 18 month warranty. Faulty units are replaced rather than repaired upon providing photo or video evidence.
Can we inspect the finished units before they ship?
Yes. Real photos and videos of your units can be taken in our sample room or warehouse on request prior to dispatch.
Applications Cases and Guides
Related Products
Get A Price on This Model
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