MKS 253A Exhaust Throttle Valve 253A-20-40-1 NW40 KF Flanges 20mm I.D. Opening
- SKU:
- Z27D009
- Shipping:
- Calculated at Checkout
- Condition:
- Used
- Warranty & Returns:
- Easy 30-Day Free Returns
Description
Manufacturer: MKS
Model: 253A-20-40-1
Condition: Used. Comes in non-original packaging. This valve is in fair cosmetic condition, with minor scuffs/scratches and residues from prior use.
The photos show the exact item(s) the buyer will receive.
Notes: This throttle valve is in good working condition. We set it up between our vacuum pump and gauge, and ran the pump. With the pump running and the valve closed, the gauge reading did not fall. We opened the valve and the pressure reading fell. With the gauge reading 1 mTorr, we closed the valve using our controller, and the pressure reading rose slowly, probably due to leaky fittings.
No manuals, cords/cables, or additional items are included if not listed or shown.
Included:
- (1) MKS 253A Throttle Valve
Specifications:
- Manufacturer: MKS Instruments, Inc.
- Model: 253A-20-40-1
- Exhaust throttle valve
- Gas fittings: NW40 ISO-KF
- Opening inner diameter: 20 mm (0.779")
- 316 stainless steel seat and body
- Flapper o-ring seal
- Internal cosine generator gives linear valve transfer characteristic
- Valve body operating temperature: 0 ... 90 ºC
- Valve motor ambient operating temperature: 0 ... 70 ºC
- Differential pressure rating (across valve: 1 bar
- Mechanical drive, not belt-driven
CDN Systems LLC, DBA Doug Deals, is not an authorized distributor or affiliated with the manufacturer of this product. Original manufacturer's warranty does not apply.
Warranty Information
Easy 30-Day Free Returns
- Items can be returned for any reason within 30 days of delivery.
- To initiate a return, the buyer must notify Dougdeals in writing within this period.
- Dougdeals will cover return shipping costs and process a full refund, including the original shipping charges, within two business days of receiving the returned item.
Return Authorization Requirements
- Returns must be authorized by Dougdeals and include an assigned RMA (Return Merchandise Authorization) number.
- Dougdeals will arrange return shipping and provide a return label to the buyer.
- Authorized returns must be received by Dougdeals within 21 days of authorization.
Exclusions and Limitations
- Dougdeals may provide a replacement or substitute item instead of a refund at its discretion.
- Returned items must be in the same condition as when sent and include all components.
- There is no restocking fee, but Dougdeals reserves the right to deduct costs from the refund for altered or damaged items.
- This return policy does not apply to orders shipped internationally, to U.S. territories, Alaska, or Hawaii.
Shipping and Responsibility
- Buyers are responsible for international and expedited shipping costs, import fees, calibration, and testing fees.
- Damages occurring during transit via Dougdeals-arranged third-party services or Dougdeals employee delivery must be noted in writing on the delivery receipt at the time of delivery. Failure to do so will result in the buyer assuming responsibility for damage claims.
- Dougdeals is not liable for loss or damage during transit via buyer-arranged shipping services.
- Customs, duties, taxes, and brokerage fees for international shipments are the buyer's responsibility.
Contact Us
Headquarters:
CDN Systems | DougDeals
12510 Trails End Rd.
Leander, TX 78641
Contact via phone:
Toll free: 877-328-9236
Main office: 512-933-0081
Local Craigslist: 512-913-6048
Local eBay: 512-999-3894
Fax: 512-873-0745
Contact online:
Sales inquiries: sales@dougdeals.com
Craigslist and local sales: local@dougdeals.com
Customer support: support@dougdeals.com