M31 M32 Series Dome Loaded Pressure Maintaining Valve

The M30 series is a balanced dome loaded pressure maintaining valve, used for quick and accurate control of inlet pressures. Ideal for high flow and low to medium pressure applications. It is a stable valve for maintaining a set pressure of upstream media, its heavy duty construction allows it to be installed in the most arduous of environments.

Applications:

• Compressors
• Dryer systems
• Filter systems
• Brewery plants
• Gas & liquid sampling
• Pump pressure control
• Research laboratories

Medium:

Liquid and gases

Inlet pressure:

M31 & M32: 70 barg (1015psig)

M33: 55 barg (798psig)

Outlet pressure range:

M31 & M32: 0,5 … 70 barg (7.3 … 1015 psig)

M33: 0,5 … 42 barg (7.3 … 609 psig)

Dome loading:

Internal or external via G1/4 connection. Domes should be loaded with air or inert gas.

Leakage:

Bubble tight (standard,typically 10-6 atm. cm3/sec-1) Helium leak tested to 10-8 atm. cm3/sec-1 (on request)

Ambient/Media temperature:

• NBR: -10 … +100°C (+14 … 212°F)
• FPM: -20 … +150°C (-4 … 302°F)
• EPDM: -30 … +115°C (-22 … 239°F)
• Nodular iron body: -20 … +150°C (-4 … 302°F)
• Stainless Steel: -40 … +150°C (-40 … 302°F)

Materials:

• Body: cast stainless steel BS EN10213 PT.4 1.4408 or cast nodular iron BS EN1563 EN-GJS-400-18LT
• Dome: cast stainless steel BS EN10213 PT.4 1.4408 or cast nodular iron BS EN1563 EN-GJS-400-18LT
• Seat: stainless steel BN ES 10088 1.4401
• Trim: Elastomer
• Elastomers: NBR, FPM, EPDM

Options:

Welded flanges upon request (Stainless Steel regulators only)