One-time purchase:
$45.25
Subscribe & Save: Save 5%
$42.99
Other Sellers on Amazon
Add to Cart
$45.99
+ Free Shipping
Sold by: OpticsPlanet, Inc
Add to Cart
$50.09
+ $6.53 shipping
Sold by: Drill Spot
Have one to sell? Sell on Amazon

Image Unavailable

Image not available for
Color:
  • Bel-Art Scienceware 420400000 Polypropylene Replacement Stopcock, For Vacuum Desiccator
  • Sorry, this item is not available in
  • Image not available
  • To view this video download Flash Player
      

Bel-Art Scienceware 420400000 Polypropylene Replacement Stopcock, For Vacuum Desiccator

3 customer reviews

Price: $45.25 & FREE Shipping. Details
Only 5 left in stock (more on the way).
Ships from and sold by Amazon.com. Gift-wrap available.
  • Stopcock to control airflow in a vacuum desiccator, for use with Bel-Art Scienceware desiccator models F42025, F42020, F42010, F42012, F42022 and F42027
  • Body constructed of polypropylene for strength, thermal performance, and solvent resistance, and plug and washer of polytetrafluoroethylene (PTFE) for strength and resistance to moisture and temperature changes
  • Bright red handle for quickly determining its position
  • Taper fits on desiccator port to provide easy, leak-proof turning
  • Can be cleaned with a soft cloth and laboratory cleanser

Pay as low as $38.46 and never run out with Subscribe & Save.
Save 5% when you subscribe to regular deliveries of this item. Save 15% on your entire delivery when you subscribe to 5 or more items that arrive in the same month. No commitments, no obligations, and shipping is FREE. Learn more
3 new from $45.25

Bonus Offer
Limited Time Only: Gift Card with Purchase
Spend $100 or more on qualifying Bel-Art products and get a $20 Amazon.com Gift Card for free. To redeem: add qualifying items and gift card to your cart together, and the promotion will be applied at checkout. Offer only applies to products sold and shipped by Amazon.com. Available while quantities last. To shop all lab products, visit the Bel-Art store.

Special Offers and Product Promotions

  • Limited Time Only: Receive a $20 Amazon Gift Card at no additional cost when you purchase $100 or more of select Bel-Art products offered by Amazon.com, while supplies last. Here's how (restrictions apply)

Product Description

The Bel-Art Scienceware 420400000 replacement stopcock is to control airflow into and out of a vacuum desiccator, for use with Bel-Art Scienceware desiccator models F42025, F42020, F42010, F42012, F42022 and F42027. The body of the stopcock is constructed of polypropylene for strength, thermal performance, and solvent resistance, and the plug and washer are constructed of polytetrafluroethylene (PTFE) for strength and resistance to moisture and temperature changes. The stopcock's taper fits on the desiccator port to provide easy, leak-proof turning. This item can be cleaned using a soft cloth and standard laboratory cleanser. The stopcock's plug has three positions: vacuum draw, shut-off, and vacuum release.

Desiccators are sealable containers used to remove water from a sample, or to preserve moisture-sensitive electronics or lab consumables, typically in laboratory, electronic, and aerospace applications. Desiccators are often used with desiccants, which are drying agents such as silica gel or activated charcoal placed under a removable platform. Standard desiccators are typically lidded jars used with a desiccant. Vacuum desiccators have a stopcock that allows air evacuation from the desiccator. Gas purge desiccators use a gas port to introduce nitrogen or other gasses, creating a controlled environment. Vacuum and gas purge desiccators may also be used with desiccants. Many desiccators are used with vacuum grease, which helps create a seal.

Bel-Art Products manufactures scientific products, including labware, testing equipment, and safety supplies, under the Bel-Art and Scienceware brands. The company, founded in 1946, is headquartered in Wayne, NJ.


Product Information

Technical Details
Brand NameBel-Art Products
Item Weight0.8 ounces
Product Dimensions3.8 x 3.3 x 1.2 inches
Item model number420400000
Material TypePolypropylene, Polytetrafluoroethylene (PTFE)
Number of Items1
Manufacturer Part Number420400000
  
Additional Information
ASINB002VBW9V4
Best Sellers Rank #199,552 in Office Products (See top 100)
Shipping Weight0.8 ounces (View shipping rates and policies)
Domestic Shipping Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
International Shipping This item is not eligible for international shipping. Learn More
Date First AvailableNovember 3, 2009
  
Warranty & Support

Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.
Feedback
 Would you like to give feedback on images?
 

Technical Details

  • Brand Name: Bel-Art Products
  • Part Number: 420400000
  • Material Type: Polypropylene, Polytetrafluoroethylene (PTFE)
  • Number of Items: 1
  • Item Package Quantity: 1

Customer Questions & Answers

Customer Reviews

5 star
0%
4 star
0%
3 star
67%
2 star
0%
1 star
33%
See all 3 customer reviews
Share your thoughts with other customers

Most Helpful Customer Reviews

Verified Purchase
has a slow leak, holds full vac for maybe 20 minutes, with a ~2 hour bleed to atmospheric pressure. it also takes much longer to pull to full vac through the tiny valve, which was clogged with milling burrs to begin with. overpriced for what is obviously cheaply manufactured. had much better luck with 15 dollars and the ace hardware plumbing section.

its alright for what it is, if i only needed it to hook up a vac hose no big deal. on the other hand if you want it to do what its intended, and hold negative pressure, find another part.
Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
By Rick Dotson on December 7, 2013
I really wanted to give this Stopcock a Two Star rating but I gave it a three because mine lasted for a year before I had to replace mine and i pretty much use it on a weekly basis.

The trick I found to using these, is to keep the bottom nut tightened while under full vacuum pressure.

But what happens over time is the "thin" plastic threads eventually stripped.

I REALLY wish they'd improve this item by making it more solid. Especially the threaded end bottom piece.
Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again
By D. Sanchez on January 15, 2013
i just recieved a Bel-Art Scienceware 420430000 Polycarbonate/PTFE Vacuum Chamber with ABS Plastic Plate, 9" Diameter x 6-1/4" Height and the valve broke on both the stopper end, as well as the connecter end upon the first use when hooked up to a 2 stage 5cfm pump. the only way i can achieve a vacuum level of -29hg is to have this loud pump constantly running. this thing literally broke on the first use and you want $40 outta me for a new one? this has got to be a joke.
Comment Was this review helpful to you? Yes No Sending feedback...
Thank you for your feedback. If this review is inappropriate, please let us know.
Sorry, we failed to record your vote. Please try again

Set up an Amazon Giveaway

Amazon Giveaway allows you to run promotional giveaways in order to create buzz, reward your audience, and attract new followers and customers. Learn more
Bel-Art Scienceware 420400000 Polypropylene Replacement Stopcock, For Vacuum Desiccator
This item: Bel-Art Scienceware 420400000 Polypropylene Replacement Stopcock, For Vacuum Desiccator
Price: $45.25
Ships from and sold by Amazon.com