Skip Content

Filter Results By

Fitting Size
Overall Length (In.)
Cut Out Length (In.)
Construction
Brand
Price
Shop By
Ratings

Cooling Sight Glasses

29 Results Found that Include 29 Products

Product availability based on selecting either shipping or pick up and a location. Dismiss
Results per page: 16 | 32 | 48
    Moisture Indicator
    • PARKER
    • Moisture IndicatorMoisture Indicator
    • Item # 6X723
    • Mfr. Model # PSG-3S
    • Sight Glass, Fitting Size 3/8 x 3/8 Inch, Fitting Sweat, Cut Out Length 4.12 Inches, Overall Length 4.88...More

    Sight Glass,3/8 x 3/8 Sweat
    • GRAINGER APPROVED
    • Sight Glass, 3/8 x 3/8 SweatSight Glass,3/8 x 3/8 Sweat
    • Item # 6AWU3
    • Mfr. Model # 6AWU3
    • Sight Glass, Moisture Indicator, Fitting Type Sweat, Fitting Size 3/8 x 3/8, Overall Length (In.) 4-7/8,...More

    Sight Glass
    • PARKER
    • Sight GlassSight Glass
    • Item # 4E924
    • Mfr. Model # PSG-4S
    • Sight Glass/Moisture Indicator, Fitting Size 1/2 x 1/2 Inch, Fitting Sweat, Cut Out Length 3.87 Inches,...More

    Sight Glass
    • PARKER
    • Sight GlassSight Glass
    • Item # 4E929
    • Mfr. Model # PSG-9S
    • Sight Glass, Fitting Size 1 1/8 x 1 1/8 Inches, Fitting Sweat, Cut Out Length 4.45 Inches, Overall Length...More

    Sight Glass,1/2 x 1/2 Sweat
    • GRAINGER APPROVED
    • Sight Glass, 1/2 x 1/2 SweatSight Glass,1/2 x 1/2 Sweat
    • Item # 6AWU4
    • Mfr. Model # 6AWU4
    • Sight Glass, Moisture Indicator, Fitting Type Sweat, Fitting Size 1/2 x 1/2, Overall Length (In.) 4-7/8,...More

    Moisture Indicator
    • PARKER
    • Moisture IndicatorMoisture Indicator
    • Item # 6X719
    • Mfr. Model # PSG-2MF
    • Sight Glass, Fitting Size 1/4 Inch Male x 1/4 Inch Female, Fitting Flare, Overall Length 3.05 Inches,...More

    Moisture Indicator
    • PARKER
    • Moisture IndicatorMoisture Indicator
    • Item # 6X720
    • Mfr. Model # PSG-3MF
    • Sight Glass, Fitting Size 3/8 Inch Male x 3/8 Inch Female, Fitting Flare, Overall Length 3.17 Inches,...More

    Moisture Indicator
    • PARKER
    • Moisture IndicatorMoisture Indicator
    • Item # 6X721
    • Mfr. Model # PSG-4MF
    • Sight Glass, Fitting Size 1/2 Inch Male x 1/2 Inch Female, Fitting Flare, Overall Length 3.39 Inches,...More

    Moisture Indicator
    • PARKER
    • Moisture IndicatorMoisture Indicator
    • Item # 6X722
    • Mfr. Model # PSG-2S
    • Sight Glass, Fitting Size 1/4 x 1/4 Inch, Fitting Sweat, Cut Out Length 4.19 Inches, Overall Length 4.88...More

    Sight Glass
    • PARKER
    • Sight GlassSight Glass
    • Item # 4E922
    • Mfr. Model # PSG-3
    • Sight Glass/Moisture Indicator, Fitting Size 3/8 Inch Male x 3/8 Inch Male, Fitting Flare, Overall Length...More

    Sight Glass
    • PARKER
    • Sight GlassSight Glass
    • Item # 4E927
    • Mfr. Model # PSG-5S
    • Sight Glass/Moisture Indicator, Fitting Size 5/8 x 5/8 Inch, Fitting Sweat, Cut Out Length 3.62 Inches,...More

    Sight Glass,5/8 x 5/8 Sweat
    • GRAINGER APPROVED
    • Sight Glass, 5/8 x 5/8 SweatSight Glass,5/8 x 5/8 Sweat
    • Item # 6AWU5
    • Mfr. Model # 6AWU5
    • Sight Glass, Moisture Indicator, Fitting Type Sweat, Fitting Size 5/8 x 5/8, Overall Length (In.) 4-7/8,...More

    Sight Glass,7/8 x 7/8 Sweat
    • GRAINGER APPROVED
    • Sight Glass, 7/8 x 7/8 SweatSight Glass,7/8 x 7/8 Sweat
    • Item # 6AWU6
    • Mfr. Model # 6AWU6
    • Sight Glass, Moisture Indicator, Fitting Type Sweat, Fitting Size 7/8 x 7/8, Overall Length (In.) 6-1/4,...More

    Sight Glass,3/8Mx3/8M Flare
    • GRAINGER APPROVED
    • Sight Glass, 3/8Mx3/8M FlareSight Glass,3/8Mx3/8M Flare
    • Item # 6AWT6
    • Mfr. Model # 6AWT6
    • Sight Glass, Moisture Indicator, Fitting Type Flare, Fitting Size 3/8M x 3/8M, Overall Length (In.) 3-9/16,...More

    Sight Glass,1/4 x 1/4 Sweat
    • GRAINGER APPROVED
    • Sight Glass, 1/4 x 1/4 SweatSight Glass,1/4 x 1/4 Sweat
    • Item # 6AWU2
    • Mfr. Model # 6AWU2
    • Sight Glass, Moisture Indicator, Fitting Type Sweat, Fitting Size 1/4 x 1/4, Overall Length (In.) 4-7/8,...More

    Sight Glass,1/4Mx1/4M Flare
    • GRAINGER APPROVED
    • Sight Glass, 1/4Mx1/4M FlareSight Glass,1/4Mx1/4M Flare
    • Item # 6AWT5
    • Mfr. Model # 6AWT5
    • Sight Glass, Moisture Indicator, Fitting Type Flare, Fitting Size 1/4M x 1/4M, Overall Length (In.) 3-7/16,...More

    Sight Glass,1/2Mx1/2M Flare
    • GRAINGER APPROVED
    • Sight Glass, 1/2Mx1/2M FlareSight Glass,1/2Mx1/2M Flare
    • Item # 6AWT7
    • Mfr. Model # 6AWT7
    • Sight Glass, Moisture Indicator, Fitting Type Flare, Fitting Size 1/2M x 1/2M, Overall Length (In.) 3-13/16,...More

    Sight Glass,1/4Mx1/4F Flare
    • GRAINGER APPROVED
    • Sight Glass, 1/4Mx1/4F FlareSight Glass,1/4Mx1/4F Flare
    • Item # 6AWT9
    • Mfr. Model # 6AWT9
    • Sight Glass, Moisture Indicator, Fitting Type Flare, Fitting Size 1/4M x 1/4F, Overall Length (In.) 3,...More

    Sight Glass,Moisture Ind,Flare,3/8in SAE
    Sight Glass
    • PARKER
    • Sight GlassSight Glass
    • Item # 4E928
    • Mfr. Model # PSG-7S
    • Sight Glass/Moisture Indicator, Fitting Size 7/8 x 7/8 Inch, Fitting Sweat, Cut Out Length 4.73 Inches,...More

    Sight Glass
    • PARKER
    • Sight GlassSight Glass
    • Item # 4E921
    • Mfr. Model # PSG-2
    • Sight Glass/Moisture Indicator, Fitting Size 1/4 Inch Male x 1/4 Inch Male, Fitting Flare, Overall Length...More

    Sight Glass,1/2Mx1/2F Flare
    • GRAINGER APPROVED
    • Sight Glass, 1/2Mx1/2F FlareSight Glass,1/2Mx1/2F Flare
    • Item # 6AWU1
    • Mfr. Model # 6AWU1
    • Sight Glass, Moisture Indicator, Fitting Type Flare, Fitting Size 1/2M x 1/2F, Overall Length (In.) 3-3/8,...More

    Sight Glass,5/8Mx5/8M Flare
    • GRAINGER APPROVED
    • Sight Glass, 5/8Mx5/8M FlareSight Glass,5/8Mx5/8M Flare
    • Item # 6AWT8
    • Mfr. Model # 6AWT8
    • Sight Glass, Moisture Indicator, Fitting Type Flare, Fitting Size 5/8M x 5/8M, Overall Length (In.) 4-1/16,...More

    Sight Glass,1 1/8x1 1/8Sweat
    • GRAINGER APPROVED
    • Sight Glass, 1 1/8x1 1/8SweatSight Glass,1 1/8x1 1/8Sweat
    • Item # 6AWU7
    • Mfr. Model # 6AWU7
    • Sight Glass, Moisture Indicator, Fitting Type Sweat, Fitting Size 1 1/8 x 1 1/8, Overall Length (In.) 6-1/4,...More

    Sight Glass,3/8Mx3/8F Flare
    • GRAINGER APPROVED
    • Sight Glass, 3/8Mx3/8F FlareSight Glass,3/8Mx3/8F Flare
    • Item # 6AWU0
    • Mfr. Model # 6AWU0
    • Sight Glass, Moisture Indicator, Fitting Type Flare, Fitting Size 3/8M x 3/8F, Overall Length (In.) 3-/16,...More

    Sight Glass,Moisture Ind,Sweat,3/8in ODS
    Sight Glass,Moisture Ind,Flare,3/8in ODS
    Sight Glass
    • PARKER
    • Sight GlassSight Glass
    • Item # 4E925
    • Mfr. Model # PSG-5
    • Sight Glass, Fitting Size 5/8 Inch Male x 5/8 Inch Male, Fitting Flare, Overall Length 4.06 Inches, Moisture...More

    Sight Glass
    • PARKER
    • Sight GlassSight Glass
    • Item # 4E923
    • Mfr. Model # PSG-4
    • Sight Glass, Fitting Size 1/2 Inch Male x 1/2 Inch Male, Fitting Flare, Overall Length 3.82 Inches, Moisture...More

    Results per page: 16 | 32 | 48

      A sight glass from Grainger has plated steel and copper fittings for a secure, corrosion-resistant fit, and is UL listed for 650 psig. But if you're repairing or rebuilding an air conditioner, refrigerator, or condensing unit, Grainger offers you more. Replace your corroded valve with a new thermostatic expansion valve from Parker. Choose a manifold gauge set that has precision flutter- and pulsation-resistant gauges with protective boots. And replace your old temperature control with a new, more reliable one. Stay cool with sight glass and moisture indicator choices from Grainger.

      Note: Product availability is real-time basis and adjusted continuously. The product will be reserved for you when you complete your order. More