Pantograph Type

Pantograph Type 18

Pantograph Type

Model No: 265

Thanks to the pressure applied by the weights, the pressure on the top and bottom of the mechanical seal is maximized. Because of its weighted construction, Because the materials used are thinner than Carbon steel and Aluminum as well as the usage of additional weight is not required, the system minimizes product escape with the effective pressure provided by the springs, unlike the weighted system. Effective seal performance can cover openings up to 200 mm. and it can work iith ±100 mm tolerance.

Design Features
Each seal is customized to fit the tank to ensure maximum performance, long life, and safe operation. Primary seals include a variety of configuration and component options. The shoe is connected by braces to the floating deck and is held tightly against the wall by springs or weighted levers A flexible coated fabric (made of Teflon) is suspended from the shoe seal to the floating deck to form a vapor barrier over the annular space between the deck and the primary seal. ERGIL Storagetech™ Liquid mounted Primary shoe seals can be categorized as PANTOGRAPH and SCISSOR type seals. The most important issue that affects the performance of the sealing system is that the load which is applied on to the shoe seals needs to balance and this force covers all openings through the rim. Mechanical seal systems are restricted to the lined storage tanks for not damaging the cladding material.

Pantograph Type 20
Pressure Vacuum Valve production certificates

Part List

No Part Name Material Remarks
07 Foam Dam, Thk.3mm Optional
06 Rim Clamp A653 / G90
05 Fabric Teflon
04 Braces ASTM SA 240 gr. 304/316 S235 JR (G) 1/4 Hardened
03 Rim Clip ASTM SA 240 gr. 304/316 S235 JR (G) 1/4 Hardened
02 Shoe Bracket ASTM SA 240 gr. 304/316 S235 JR (G) 1/4 Hardened
01 Shoe Plate ASTM SA 240 gr. 304/316 S235 JR (G) 1/4 Hardened

Floating Roofs & Seals Models