OEM P/N:
ESCT P/N:
PART TYPE:
OEM:
The Gate Valve Body Mechanism is the mechanical heart of the slit-valve isolation system that seals each Super-e process chamber from the transfer environment. On Applied Materials etch and deposition platforms, every chamber is connected to a central wafer-handling region through a narrow slit, and a gate valve drives a sealing plate across that slit to open or close the path. This particular assembly comprises the valve body casting, the internal drive linkage and gate carriage, and the SRV cable harness that returns valve position and limit-switch feedback to the tool controller. It is supplied without the pneumatic solenoid, allowing the customer to retain or transfer their existing solenoid pack while replacing the worn mechanical body and cabling.
Within the Super-e chamber architecture, this mechanism sits directly at the chamber-to-transfer interface. When commanded to open, compressed air (routed through the separately supplied solenoid) acts on an internal piston or bellows, which drives the gate linkage to lift and retract the sealing plate, clearing the slit so the robot blade can pass a wafer in or out. When commanded to close, the linkage drives the plate back against the slit seal, restoring vacuum isolation. The SRV cable carries the discrete position and reed/limit signals that confirm to the system software that the valve has fully reached its end-of-travel state before the next handling or process step is permitted.
Because the gate valve cycles on every single wafer pass, potentially thousands of times per day across a busy fab, the body mechanism and its feedback cabling are among the highest-duty mechanical assemblies on the tool. Wear, leakage and intermittent feedback signals here translate directly into chamber-down events, throughput loss and aborted lots, which is why a verified replacement body assembly is a key element of any AMAT Super-e spares strategy.
The body mechanism performs the physical work of opening and closing the chamber slit while reporting its state back to the control system. Its core responsibilities include:
The mechanical quality of a gate valve body is defined by how cleanly and repeatably it converts actuation into sealing travel over a very high cycle count. A healthy assembly delivers the following:
The integrated SRV cable is what turns a mechanical movement into a trustworthy control signal. Its performance characteristics matter as much as the linkage itself:
A degraded gate valve body mechanism rarely fails silently; it erodes availability and yield in ways that can be hard to diagnose. The downstream consequences include:
Continuous high-frequency cycling wears the gate carriage rails, pivots and bushings. As clearances open up or lubrication breaks down, the mechanism can begin to bind, judder or stall mid-stroke, producing inconsistent seating and intermittent valve-position faults that worsen over time.
The piston or bellows seals inside the body harden, crack or take a permanent set after extended service. The result is air leakage, loss of driving force, sluggish actuation and an inability to hold the gate firmly seated, symptoms that mimic a weak solenoid but in fact originate in the body mechanism itself.
The constantly flexing SRV cable suffers conductor fatigue, insulation chafing and connector contact wear, while the limit switches themselves can lose calibration or bounce. This causes the controller to see false, missing or unstable open/closed signals, generating nuisance interlock trips even when the mechanical valve is moving correctly.
Replacement should be performed by a qualified service engineer following Applied Materials safety and lockout procedures for the specific Super-e configuration. The general sequence is as follows:
Because the gate valve body is a per-wafer wear item, holding a verified replacement on the shelf is one of the most cost-effective ways to protect chamber availability. Sourcing this assembly through ESCT Fab Support offers several advantages:
It includes the gate valve body casting, the internal gate drive linkage and carriage, and the integrated SRV position/limit feedback cable. It is supplied without the pneumatic solenoid, which is expected to be retained or transferred from the existing valve.
No. This is supplied as a new, OEM-compatible part that has been verified to the form, fit and function of Applied Materials OEM P/N 3870-02018. It is not an original Applied Materials branded part, and ESCT Fab Support is an independent supplier.
Solenoid packs frequently outlast the mechanical body and cabling, so this assembly is offered without one to avoid duplicate hardware and reduce cost. The customer transfers their serviceable solenoid onto the replacement body during installation.
The SRV cable carries the valve’s open, closed and limit feedback signals back to the tool controller. These signals satisfy the software interlocks that confirm the gate has reached its commanded position before wafer handling or processing is allowed to continue.
Sluggish or stalled travel, uneven seating and persistent leakage point to the body mechanism and its internal seals, whereas a complete failure to actuate often points to the solenoid or air supply. Intermittent valve-position faults with normal motion usually indicate the SRV cable or limit switches. A service engineer can isolate the cause by observing actuation and feedback during a controlled cycle.
The current lead time for ES1011-021 is approximately 5 weeks. We recommend holding a unit as a critical spare given the per-wafer duty cycle of the slit valve and the chamber-down impact of a failure.
The Gate Valve Body Mechanism without Solenoid, with SRV Cable (OEM P/N 3870-02018, ESCT P/N ES1011-021) is the mechanical and feedback core of the slit-valve isolation system on AMAT Super-e process chambers. It drives the sealing plate across the chamber slit, maintains vacuum isolation, and reports verified open/closed status to the controller through its integrated SRV cable. As one of the highest-duty mechanical assemblies on the tool, a worn body mechanism directly threatens isolation integrity, throughput and yield. Supplied without a solenoid for cost efficiency and verified to OEM form, fit and function, this assembly is a sensible critical spare for keeping Super-e chambers available and predictable.
Disclaimer: This part is supplied by ESCT Fab Support as a new, OEM-compatible second-source component, verified to the form, fit and function of Applied Materials part number 3870-02018. It is not an original OEM part and is not sold as one. It is not manufactured by, endorsed by, or affiliated with Applied Materials, and all manufacturer names and part numbers are quoted for identification and compatibility purposes only.
Fill out the form below to request a quote for the part/s you require, making sure to include the OEM part number.
If the part you are looking for is not listed, get in touch and we will try to source it for you through our wide network of partners and suppliers.
We use cookies We use analytics cookies to see how visitors use this site, so we can improve it. They are set only if you accept. Read our Cookie Policy.
