Products Block and control valve MAK

Exclusive patented inclined cone sealing system

The block and control valve MAK, utilizing ADAMS exclusive patented inclined cone sealing system, has proven its longevity under extreme working conditions and thousands of cycles. It offers a very economical solution as a maintenance-free design for metal-to-metal zero leakage capability.

Metal sealing, robust construction, and proven engineered material combinations make the MAK suitable for a wide range of temperatures and duties.

Easy maintenance

The sealing system is completely integrated within the body utilizing the conventional ADAMS laminated metal/graphite sealing allowing for easy maintenance of both sealing surfaces.

Due to the unique seat geometry the disc moves without any jamming even at high temperature differentials and under the full rated pressure. In addition to zero leakage the MAK offers excellent control characteristics and low pressure loss.


  • Bi-directional zero bubble per minute shut-off
  • Anti-blowout shaft design
  • No sealing friction
  • High temperature compatibility
  • Inherently fire-safe
  • Low operation torques
  • Excellent control characteristics
  • Low pressure loss
  • Compact, robust construction
  • Low maintenance
  • Field repairable


  • Double disc design
  • PN 10 – 400
  • ANSI 150 – 1500
  • Cryogenic design
  • Hard-faced disc edge
  • Resilient seal
  • Heating jacket
  • Steam purged seat
  • Disc locking device, mansafe design
  • Spring-loaded stuffing box
  • Emission-free shaft sealing, complying with clean air act 1990
  • Stuffing box design for inservice packing replacement
  • Butt weld ends

Features of the block and control valve MAK

Depending on customers requirements, we adapt the valves to suit special needs and also equip them with additional options. That is how a custom-made valve comes into being. That is one of our strengths

  • Bi-directional tight shut-off and control with metal-to-metal sealing
  • Triple eccentric sealing system with laminated metal body seal
  • Seal fully integrated within the body, protected from flow
  • Operation: manual, electric, pneumatic, hydraulic


ADAMS Product range
MAK brochure
LNG brochure
Hydrogen brochure
ADAMS Stock valves brochure
Control valve flyer