American AVK Company

Expect Quality Products
Series 55

Series 55:  Large Diameter Gate Valves

The series 55 valve is our large diameter ductile-iron gate valve meeting or exceeding the requirements of AWWA C515. It comes in MJ x MJ, MJxFL, and FLxFL versions. All valves come pre-fitted with an F16 mounting plate to mount gearing or motorized actuators. Bevel or spur gearing is available on request for 18" to 24". Bevel or spur gearing is supplies on all 30" and 36" valves.


  • Certified to NSF 61 by Underwriters Laboratories and NSF
  • All AVK gate series 55 valves meet or exceed the requirements of AWWA C515
  • Stainless steel stem - standard
  • Lead free
  • Twice the yield strength required by AWWA eliminates bent and broken stems
  • Bronze stems are available
  • Stainless steel bolts - standard
  • Packing gland bolts and bonnet bolts are stainless steel for corrosion resistance
  • Bonnet bolts are countersunk and capped with hot melt to totally isolate the bolts from corrosive environments
  • O-ring bonnet gasket wraps each bolt to prevent corrosion
  • Bonnet bolt failure due to bolt corrosion eliminated
  • Fully encapsulated wedge with EPDM - standard
  • Ductile iron wedge fully encapsulated in EPDM rubber with an integral bronze stem nut for optimum corrosion protection and precision wedge tracking
  • EPDM resists attack from chloramines
  • Ductile iron gland flange for protection should the valve be over-torqued in the closed direction - will not break or crack– please delete this line
  • Stainless steel or integral lifting eyes, supplied on every valve
  • Wiper ring - to prevent impurities from entering the stem and to protect the o-rings
  • Two o-ring stem seals to reduce friction and prevent wear and tear - replaceable under full pressure
  • Third o-ring stem seal protects upper stem from impurities entering from the water way
  • Coating to AWWA C550 - Electrostatically applied fusion bonded epoxy coating inside and outside for excellent corrosion resistance
  • 100% testing - All valves tested to 250 PSI / 500 PSI as required by AWWA