{"id":7684,"date":"2025-09-03T14:15:34","date_gmt":"2025-09-03T14:15:34","guid":{"rendered":"https:\/\/www.pecta.pt\/produto\/longitudinal-sight-glass-type-334-pn-3\/"},"modified":"2025-09-03T14:15:34","modified_gmt":"2025-09-03T14:15:34","slug":"longitudinal-sight-glass-type-334-pn-3","status":"publish","type":"product","link":"https:\/\/www.pecta.pt\/en\/produto\/longitudinal-sight-glass-type-334-pn-3\/","title":{"rendered":"Longitudinal sight glass type 334 – PN 3"},"content":{"rendered":"
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The 334 sight has a lightweight design and offers a significantly larger viewing window compared to the rectangular 330 sight<\/a>, but with a relatively low working pressure of up to 3 bar.<\/p>\n

The 334 sight is made of high-quality 1.4571 (316Ti) stainless steel, which is highly valued by our customers. On request, the model is also available in many other materials, tailored to specific requirements and particular applications. <\/p>\n

The equipment is sealed using flat gaskets tailored to your requirements. We supply C-4400 fibre, PTFE, NBR and graphite gaskets, amongst others, as standard. <\/p>\n

For dark liquids or unlit tanks, the use of a reflective sight glass in accordance with DIN 7081 or similar is recommended. Due to the refraction of light in the built-in prisms, the liquid level can be more easily identified. However, if the tank is lit or if the colour of the product is visible, a transparent sight glass should be used. Reflective glass must not be covered with mica discs, as this prevents reflection. <\/p>\n

If the maximum operating temperature of DIN 7081 borosilicate glass does not meet your requirements, or if the process conditions pose a problem even for this highly resistant glass, a specially adapted mica protective disc offers additional protection against temperature and steam. FEP or Halar\u00ae coatings provide additional protection for the borosilicate glass against aggressive chemicals. <\/p>\n

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TECHNICAL SPECIFICATIONS – Longitudinal sight glass type 334<\/h4>\n\n\n\n\n\n\n\n\n
Flange Material:<\/strong><\/td>\nBase Flange: 1.4571 (standard)
\nCover Flange: 1.4571 (standard)
\nOther materials on request<\/td>\n<\/tr>\n
Shape:<\/strong><\/td>\nIn accordance with DIN 7081<\/td>\n<\/tr>\n
Gaskets:<\/strong><\/td>\nKlingerSil\u00ae C4400
\nPTFE, FKM, NBR, Silicone, EPDM
\nGraphite<\/td>\n<\/tr>\n
Total length:<\/strong><\/td>\n270 to 760 mm<\/td>\n<\/tr>\n
Temperature \/ Glass:<\/strong><\/td>\nUp to 280\u00b0C <\/strong>with borosilicate glass complying with or equivalent to DIN 7081<\/td>\n<\/tr>\n
Options:<\/strong><\/td>\nFEP protective screen \/ coating
\nMica protection
\nHigh temperature version
\nCustom made designs<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

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