A round metal component with grooves, labeled

A metallic cylindrical component with flanged edges, typically used in machinery or piping systems.

A metallic, cylindrical component with a textured surface and distinct geometric shapes.

A metallic base plate with a central handle and a guiding mechanism, designed for precision applications.

A stainless steel device with a handle and a probe, likely used for measuring or controlling fluid flow, featuring an electrical cable.

Video | Container sight glass Type 327 – ACI Industry Valves GmbH

Screwed sight glass fitting type 327

similar to DIN 11851 / EN 10357

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Available from stock

Screwed sight glass Type 327 for working pressures up to 10 barg

To the Glass consultant

Datasheet

Certified quality

Technical data

Nominal sizes DN

25
32
40
50
65
80
100
125
150

Nominal pressure PN

6
10

Temperature

80°C
130°C
150°C
180°C
200°C

Options

Wiper SGW with PTFE or silicone wiper blade
LED light for non-Ex areas
FEP or Halar® coating

Quick overview

max. 10 barg

heat resistant up to 200 °C

for liquid media

for gaseous media

Nominal sizes
DN 25 - 150

Custom designs available

Accessories available

Cross-section
drawing

A simple black silhouette of a cat sitting with its tail curled.

Dimensions

DN	25	32	40	50	65	80	100	125	150
D1 [mm]	26	32	38	50	66	81	100	125	150
D2 [mm]	29	35	41	53	70	85	104	129	154
D3 [mm]	63	70	78	92	112	127	148	178	210
L [mm]	37	40	41	43	48	54	64	58	60
Weight [kg]	0.31	0.40	0.50	0.70	1.10	1.61	2.27	3.10	5.30
Surface Inside Ra ≤ 0.8 μm

Product information

Screwed sight glass type 327 for areas with high hygiene requirements

The ACI screwed sight glass, based on DIN 11851 / EN 10357, is specifically designed for use in the food industry, medicine, and other areas with high hygiene demands.

The threaded socket of the sight glass is welded with an open pipe socket according to DIN 11851 and EN 10357, creating a stable, permanently tight connection with the rest of the system. On the media-contacting side, a borosilicate glass disc seals the sight glass reliably according to DIN 7080. The sealing is done via a specially shaped O-ring made of NBR, EPDM, silicone, FKM (Viton®), or PTFE for milk pipe connections. A slotted nut ensures a secure grip and firm seating of all components.

If the maximum operating temperature of borosilicate glass according to DIN 7080 does not meet your requirements, or if the process conditions present a problem even for the highly resistant borosilicate glass, a mica protective disc tailored for the fitting offers additional protection against temperature and steam. FEP or Halar® coatings further protect the borosilicate glass from aggressive chemicals or caustics .

Like our container sight glasses, the screwed sight glass type 327 can be equipped, if needed, with sight glass wipers or with LED lights for illuminating the interior.

Slotted nut
Glass cushion
Sight glass
D-Ring gasket
Threaded socket

Exploded view of a connector assembly showing five components: a threaded nut, a sealing washer, a flat disc, an O-ring, and a threaded base.

Would you like personal advice?

Benefit from our expert knowledge in process monitoring. Our experienced team will provide you with sound advice when selecting the ideal sight glass fittings for your specific requirements. Schedule your personal consultation now!

Frederic Glöde

Sales Director

0049 (0) 2461 91634 00

fg@aci24.com

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Accessories

A round, transparent glass surface with a cleaning squeegee attached to it.

Sight glass wiper

For manual cleaning of the sight glass plate