Product description
The Mark 75 is a lightweight, compact wafer-style body that weighs 10 times less than a traditional valve. We manufacture the valves using less steel and other raw materials. The shipping size, weight, packing waste and costs decrease dramatically. The Mark 75 uses fewer fossil fuels not only when it is built and shipped, but also less power in its day-to-day operations and fewer resources when it needs maintenance.
Control valve MK75
Size
- 1" (DN25) through 8" (DN200)1" (DN25) thru 6" (DN150) ANSI 150# / 300# (PN25/40) Class Wafer Style Valves (bolt-around); 8" (DN200) ANSI 150# (PN25) Class Wafer Style Valves (bolt-thru)
Body/Bonnet Connection
- 316 Stainless Steel (ASME SA-479)
- Carbon Steel (SA-105)
Trim Material
- 303 Stainless Steel (8" only)
- 316 Stainless Steel
Seat Materials
- Jorcote/316SS – standard
- Jorcote with 303SS - optional
Yoke Materials
- Ductile Iron (1" - 2")
- NAMUR Cast Iron
Actuator Case Material
- SW Poland B
Packing Material
- Spring loaded Teflon V-Ring to 500°F (260°C)
- Grafoil above 500°F (260°C)
Shutoff
- ANSI Class IV tightness
Ranges
- 3-15, 3-9*, 9-15*, 6-30 psi (0,2–1,0; 0,2–0,6; 0,6–1,0; 0,4–2,1 bar)* positioner required
Action
- Direct (ATC)
- Reverse (ATO)
Body Rating (1" – 6")
- Stainless Steel 720 psi @ 100°F (49,6 bar @ 37,8°C); 480 psi @ 500°F with Teflon pack-ing (33,1 bar @ 260°C); 445 psi @ 550°F with braided packing (30,7 bar @ 288°C)
- Carbon Steel 740 psi @ 100°F (51,0 bar at 38°C); 600 psi @ 500°F with Teflon packing (41,4 bar @ 260°C); 535 psi @ 550°F with braided packing (36,9 bar @ 288°C)
Body Rating (8")
- Stainless Steel 275 psi @ 100°F (19 bar @ 38,8°C) and 155 psi @ 550°F (10,7 bar @ 288°C)
- Carbon Steel 285 psi @ 100°F (19,7 bar @ 38,8°C) and 155 psi @ 550°F (10,7 bar @ 288°C)
Actuators
- 35M, 55M, 85M, 100M multi-spring actuator (de-pending on size/pressure drop)
- Direct mount pneumatic piston
- Electric motorized
Turndown Ratio Capability
- Up to 100:1 (depending on application)
Features and Benefits
- Easy installation between flanges with wafer body
- High flow rates
- Self-cleaning, self-lapping seats
- Reduced noise compared to conventional globe/cage valves
- More resistant to cavitation/flashing with straight-through wafer design
