Housing with upper flange made of machined and hardened steel.
Machined steel cover cap.*
Felt sealing system.**
Self cleaning bottom hole.
Housing available in steel, zinc plated steel, stainless steel.
Chrome steel, AISI 420C stainless steel, plastic material balls.
* For SPM 12 – 15 – 25 in pressed metal sheet.
** Except SPM 12 – 15 – 25 and types with the large ball in plastic material.

• Housing with flange made of machined from rod and hardened steel, to guarantee high load capacities and higher resistance to strong conditions.
• Reinforced cover cap made of machined steel (for SPM 12, 15 and 25 types made of pressed metal sheet).
• Felt sealing system (except for SPM 12 and 15).
• Drain hole at the bottom.