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Here on Industrial World 360, we are unmatched in our ability to provide customers time and cost savings on all the Window Sight Flow Indicators parts they require for their operations. On this page, you can find every listing that we have ready-for-purchase for this particular subcategory of items, including in-demand part numbers like 21TH46, 21TH47, 21TH48, 21TH49, 21TH50, 21TH52, 21TH53, and various others. Take the time to explore our offerings as you see fit, and you may always fill out and submit an RFQ form as provided on our website for the means of requesting quotes for your comparisons.

To ensure that we only supply customers with the absolute best on the market, we enact rigorous vetting processes for every entity that we source from, and countless parts are subjected to varying levels of quality control assurance prior to shipment. Alongside our commitment to the fit, form, and functionality of every listing, we also strive to always meet any time constraints that our customers may have with expedited shipping options on domestic and international orders alike. If you have any potential restrictions or needs, be sure to let us know as soon as you can so that we can best tailor a solution to meet your requirements.

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Part No.DescriptionManufacturerSub CategoryRFQ
21th46Carbon Steel Window Sight Flow Indicator, 1/2 in Pipe Size, FNPT Connection TypeL J Star
21th47Carbon Steel Window Sight Flow Indicator, 3/4 in Pipe Size, FNPT Connection TypeL J Star
21th48Carbon Steel Window Sight Flow Indicator, 1 in Pipe Size, FNPT Connection TypeL J Star
21th49Carbon Steel Window Sight Flow Indicator, 1 1/2 in Pipe Size, FNPT Connection TypeL J Star
21th50Carbon Steel Window Sight Flow Indicator, 2 in Pipe Size, FNPT Connection TypeL J Star
21th52Stainless Steel Window Sight Flow Indicator, 1/2 in Pipe Size, FNPT Connection TypeL J Star
21th53Stainless Steel Window Sight Flow Indicator, 3/4 in Pipe Size, FNPT Connection TypeL J Star
21th54Stainless Steel Window Sight Flow Indicator, 1 in Pipe Size, FNPT Connection TypeL J Star
21th55Stainless Steel Window Sight Flow Indicator, 1 1/2 in Pipe Size, FNPT Connection TypeL J Star
21th56Stainless Steel Window Sight Flow Indicator, 2 in Pipe Size, FNPT Connection TypeL J Star
21th57Carbon Steel Window Sight Flow Indicator, 1/2 in Pipe Size, 150# Flange Connection TypeL J Star
21th58Carbon Steel Window Sight Flow Indicator, 3/4 in Pipe Size, 150# Flange Connection TypeL J Star
21th59Carbon Steel Window Sight Flow Indicator, 1 in Pipe Size, 150# Flange Connection TypeL J Star
21th60Carbon Steel Window Sight Flow Indicator, 1 1/2 in Pipe Size, 150# Flange Connection TypeL J Star
21th61Carbon Steel Window Sight Flow Indicator, 2 in Pipe Size, 150# Flange Connection TypeL J Star
21th62Stainless Steel Window Sight Flow Indicator, 1/2 in Pipe Size, 150# Flange Connection TypeL J Star
21th63Stainless Steel Window Sight Flow Indicator, 3/4 in Pipe Size, 150# Flange Connection TypeL J Star
21th64Stainless Steel Window Sight Flow Indicator, 1 in Pipe Size, 150# Flange Connection TypeL J Star
21th65Stainless Steel Window Sight Flow Indicator, 1 1/2 in Pipe Size, 150# Flange Connection TypeL J Star
21th66Stainless Steel Window Sight Flow Indicator, 2 in Pipe Size, 150# Flange Connection TypeL J Star

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Americas Fastest Growing Private Company
ASA Member
NBAA Member
ISO 9001:2015 & AS9120B
Cage Code 6RE77
ITAR
eCustoms Visual Compliance
D-U-N-S Number 069876325
FAA 0056 B Accredited
ESD S20.20
AS 6081:2012
NIST 800-171 Compliance
Top Distributors 2018
Top Distributors 2020
Top Distributors 2025
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