Mark 96 Series – Pressure Regulator

The Mark 96 operates by sensing pressure under the diaphragm on the downstream side of the seat. As the downstream pressure approaches the setpoint, the force caused by the pressure acting on the diaphragm overcomes the force of the range spring, and the plug begins to move up toward closed. This reduces the downstream pressure and maintains the set pint. If the pressure underneath the diaphragm begins to fall, the spring forces the plug to move down towards open, to allow the set point to be maintained.

Steriflow Valve Express Product

• Sizes: 3/4″ – 1-1/2″
• 3/4″ CV = 0.5; 1,5
• 1″ CV = 1.5; 4.5
• 1-1/2″ CV = 10
• Hard/soft seat, bolted body, standard finish

Sizes

• 3/4″ (DN20), 1″ (DN25), 1-1/2″ (DN40), 2″ (DN50), 3″ (DN80); ISO DN15, DN20, DN25, DN40, DN50, DN80

End Connections

• ASME Tri-Clamp, ASME Tube Weld Ends, DIN/ISO Tri-Clamp Conn’s to DIN 32676 Row A, B, DIN/ISO Tube Weld Ends to DIN 11866 Row A, B

Guage Port

• 3/4″ ASME Hygienic Clamp

Body Connections

• Bolted – standard for all sizes

Body and Trim Materials

• 316L Stainless Steel (ASTM A479)

Seat Materials

• Standard hard seat – integral 316L SST seat; Optional soft seat Jorlon (for Cv 1.5, 1″ size and above) (FDA & USP Class VI) for steam and hot fluid service to 338°F (170°C); Teflon (for Cv 2.5, 1″ size and above) to 252°F (122°C) continuous or 275°F (135°C) intermittent [not to exceed 15 min in a one hour period] FDA, USP Class VI; PEEK (3/4″ and above) (FDA & USP Class VI) for steam and hot fluid service to 350°F (177°C).

Note: Consult factory for how to order PEEK soft seat materials

Spring Housing Materials

• CF8M cast SST (3/4″ – 1″); Fabricated 316L SST (1-1/2″ – 3″)

Diaphragm Materials

• 316L SST, EPDM/Nylon (to 275°C, 135°C); FDA only); Jorlon (up to 400°F, 204°C), FDA, USP Class VI; Ultra-thin Jorlon (to 400°F, 204°C), FDA, USP Class VI (for use with 308 range spring only)

O-Ring Materials

• EPDM (to 275°F, 135°C), FDA, USP Class VI; Buna-N (to 225°F, 107°C) – FDA; Viton (to 400°F, 204°C) – FDA, USP Class VI; Silicone (to 400°F, 204°C) – FDA, USP Class VI; Teflon-Encapsulated Viton (to 400°F, 204°C) – FDA, USP Class VI; Teflon-Encapsulated Silicone (to 400°F, 204°C) – FDA, USP Class VI (1″ – 3″ only)

Shut-off

• ANSI Class III hard seat or Class VI soft seat

Maximum Allowable Pressure Differential

• 200 psi (3-8 spring range has a range of 40 psi)