Material

• Cover: steel sheet, with chrome plating superficial treatment.
• Flange: zinc-plated steel sheet.
• Bayonet and flange with bayonet: zinc-plated steel sheet.

Packing rings

• SMN.46: two flat packing rings in rubber-impregnated cork and one in NBR synthetic rubber.
• SMN.80 SMW.80: three flat packing rings in rubber-impregnated cork.

Overpressure valve (only for SMW-BA)

Technopolymer with NBR synthetic rubber O-ring and stainless steel spring.Set at around 0.350 bar (0.700 bar on request).

Suction valve (only for SMW-BA)

Technopolymer sealing disk with NBR synthetic rubber O-ring and stainless steel spring.Set at around 0.030 bar.

Ring-shaped air filter

Tech-foam 40 µ.

Filter setting spring (only for SMN-BA)

Zinc-plated steel.

Filtration basket

Electro zinc-plated steel, degree of filtration 800µ.

Safety chain (only for SMN.80-BA/SMW.80-BA)

Brass

Standard executions

• SMN-BA: breather cap.
• SMW-BA: double-valve breather cap.

Mounting

• SMN.46: by means of three glossy zinc-plated steel screws with screwdriver slot head M5x12, supplied.
• SMN.80 SMW.80: by means of six glossy zinc-plated steel screws with screwdriver slot head M5x12, supplied.

Maximum continuous working temperature

100°C.