A failing pulse valve kills baghouse efficiency and drives up energy costs. The ASCO SCG353A043 dust collector valve is a 3/4″ pilot-operated diaphragm valve designed specifically for reverse-jet cleaning systems. This guide covers its complete specifications, key features, and repair kit recommendations.
You will learn the exact operating parameters, compatible replacement parts, and how to select the right repair kit for your application. Whether you are replacing an old valve or stocking maintenance spares, this information will help you make informed purchasing decisions.
ASCO SCG353A043 Specs at a Glance
Understanding the technical specifications is the first step to proper selection. Here are the key parameters for this valve model.
The valve is designed for air and inert gas service only. The angle body configuration minimizes pressure drop and allows rapid valve response .
Key Features of the 353 Series
The SCG353A043 belongs to ASCO’s 353 series, which incorporates several engineering features that make it ideal for dust collector applications.
High Flow Capacity
The valve delivers exceptional flow for its 3/4″ port size. The angle body design eliminates unnecessary turns and restrictions in the air path, allowing the pulse jet to efficiently clean filter bags with minimal pressure loss.
No-Spring Construction
Unlike conventional solenoid valves, this model uses a differential pressure design rather than a mechanical spring to return the diaphragm . This reduces moving parts and eliminates spring fatigue as a failure mode.
Integrated Push-to-Connect Fittings
The valve body accepts push-in fittings for quick installation. This eliminates the need for threaded pipe connections and reduces installation time significantly .
Built-In Silencer
The pilot exhaust includes an integrated silencer that reduces operating noise and prevents contaminants from entering the pilot mechanism .
Compatible Repair Kits for SCG353A043
Even the best valves need periodic maintenance. Knowing the correct repair kit numbers ensures you have the right parts when downtime occurs.
Main Diaphragm Repair Kit
The primary repair kit for the ASCO SCG353A043 dust collector valve is C113444 . This kit includes:
- Main diaphragm (TPE or NBR material)
- Pilot seal disc
- Small internal springs
- Gaskets and o-rings
Some aftermarket suppliers offer this kit under reference number K0850 .
Solenoid Pilot Assembly
For pilot head failures, the replacement armature assembly is also referenced as K0850. This includes :
- 304 stainless steel core tube
- Stainless steel 430FR moving core
- Return spring
- NBR sealing insert (Viton optional for high temperature)
Coil Replacement Options
The solenoid coil is ordered separately from the valve body. Compatible coil part numbers include :
| Voltage | Coil Part Number |
|---|---|
| 24 VDC | 400325642 |
| 24 VAC | 400325101 |
| 110 VAC | 400325118 |
| 220 VAC | 400325118 |
OEM vs. Aftermarket Repair Kits
When purchasing replacement parts, you have two primary options.
Genuine ASCO Kits
Original equipment manufacturer (OEM) kits guarantee exact material specifications and dimensional accuracy. They are the safest choice for critical applications where failure is not acceptable.
Aftermarket Alternatives
Several manufacturers produce compatible kits for the SCG353A043 . These can offer cost savings of 30-50% compared to OEM.
Quality considerations for aftermarket kits:
- Verify the diaphragm material (NBR, TPE, or FKM/Viton)
- Check the operating temperature range matches your application
- Confirm the supplier provides material certifications if required
The standard diaphragm material for this valve is TPE, with NBR used for seals . For high-temperature applications, request FKM (Viton) components .
Installation and Maintenance Tips
Proper installation extends valve life and reduces repair frequency.
Pre-Installation Checks
- Verify the air supply is clean and dry. Moisture and oil degrade diaphragms over time.
- Inspect the valve body seat for nicks or debris before installing a new diaphragm.
- Ensure the correct voltage is supplied to the coil.
Torque Specifications
When reassembling the valve after installing a repair kit, tighten the bonnet screws evenly in a crisscross pattern. Over-torquing distorts the diaphragm and causes premature failure.
Recommended Inspection Interval
For normal duty cycles (pulse frequency 3-5 seconds off-time), inspect diaphragms every 12 months. For high-frequency applications (over 100 pulses per minute), reduce the inspection interval to 6 months .
Conclusion
The ASCO SCG353A043 dust collector valve is a reliable 3/4″ pulse valve with a 25mm orifice, aluminum body, and pressure range of 0.35-8.5 bar. When maintenance is required, the C113444 repair kit (or aftermarket K0850 equivalent) contains all necessary wear parts. Always match the diaphragm material to your operating temperature and verify coil voltage before ordering.
Ready to order replacement parts? Browse our selection of genuine ASCO and compatible repair kits for the SCG353A043 series. Contact our technical team for help identifying the correct components for your specific application.