Product Overview

The MP 125ht Gate Valves are manufactured by Maran e Peracini srl in Italy, designed according to EN 1171 standards. These gate valves feature a face-to-face length compliant with EN 558-1 (basic series 14) and flanged ends per EN 1092-2 PN10 with raised face, with options for PN16 or other specifications upon request. They incorporate an inside screw thread with clockwise closing and an adjustable stuffing box, ensuring minimal pressure drop and bi-directional flow capability. Preferred installation orientation is with the stem vertically upwards.

Main Characteristics

• Manufactured in Italy per EN 1171
• Face-to-face length per EN 558-1, basic series 14
• Flanged ends per EN 1092-2 PN10 (raised face, undrilled), PN16 or custom options
• Inside screw thread with clockwise closing
• Adjustable stuffing box
• Minimal pressure drop
• Hydrostatically tested according to EN 12266-1 (Test type P11-P12 Rate A)
• Compliant with Pressure Equipment Directive 2014/68/EU Group 1
• 100% full bore design
• Bi-directional flow, preferred stem vertical orientation

Materials and Construction

The valve body is made of EN-GJL-250 grey cast iron (per EN 1561), with internal components including AISI 304L stainless steel trim for corrosion resistance. The stem is stainless steel AISI 410 (X12Cr13). The wedge material varies by size: carbon steel plus AISI 304L stainless steel for DN 40 to DN 100, and grey cast iron for DN 125 to DN 300. External corrosion protection includes a phenolic-oil resin coating with zinc-phosphate painting (Grey RAL 7011) as standard, with options for integral epoxy coating and custom colors.

Technical Specifications

Operating Conditions

• Working temperature range: -10°C to +120°C (standard), up to +150°C (reduced pressure)
• Maximum working pressure: 10 bar (up to 120°C), 8 bar (120°C to 150°C)

Testing and Compliance

• Hydrostatic testing per EN 12266-1: Body test (P11) at 15 bar, Seat test (P12) with water at 11 bar and air at 6 bar
• Pressure Equipment Directive 2014/68/EU Group 1 compliance

Parts and Material Specifications

Applications

• Industrial plants
• Sewage water systems
• Water treatment facilities
• Transformer oil cooling circuits
• Aggressive fluids handling
• Storage tanks

Corrosion Protection

• Standard external coating: Phenolic-oil resin with zinc-phosphate painting (Grey RAL 7011)
• Optional integral epoxy coating available
• Custom colors available on request

Additional Notes

The valves are handwheel operated with specified torque and number of turns for opening/closing depending on size. The design ensures minimal pressure drop and full bore flow. The manufacturer reserves the right to make changes without notice and disclaims liability for typographical errors.