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ASCO 310420 valve rebuild kit with cap clip core tube flow control o rings piston seal springs support tube

ASCO Power Technologies

ASCO Power Technologies 310420 Valve Rebuild Kit

SKU CH-H5K3-QQV8F

Valve rebuild kit with cap, clip, core tube, flow control, O-rings, piston assembly, seal, springs, support and tube for Emerson 8221G007 hot water and steam valves

  • Complete valve restoration with all essential components included
  • UL Listed certification confirms safety compliance for hot water and steam systems
  • Direct compatibility with Emerson 8221G007 and Grainger 3UL38 models
  • Step-by-step instructions enable straightforward installation without guesswork
  • Durable O-rings, springs and seals prevent leaks and extend service life

Valve Rebuild Kit for Hot Water and Steam Systems

This ASCO 310420 kit is a valve repair set designed for hot water and steam valve maintenance. It suits facilities engineers and maintenance technicians who service compatible Emerson equipment. The kit provides a complete overhaul solution for specific valve models.

Bundled Components Restore Full Valve Function

The package includes a cap, clip, core tube assembly, flow control, O-rings, piston assembly, seal, springs, support, and tube. Instructions are supplied to guide the reassembly process. These parts replace worn internals to return the valve to reliable operation.

Verify Model Compatibility Before Purchase

Confirm the existing valve matches manufacturer model 8221G007 or Grainger part 3UL38 for correct fitment. The kit carries a UL Listed standard for safety compliance. It is intended strictly for hot water and steam valve types.

How it compares

Measured against everything we stock in Bath Accessories & Soap Dispensers, at today’s prices. Recalculated every night.

Price $377.99
Pricier than about 91% of the 1,499 comparable items (median $39.99).

Specifications

Product
Brand nameASCO
Product typeOther

Questions about this item

Which components in the 310420 kit are most likely to need replacement again after repeated hot-water cycles?

The O-rings, seal, springs and piston assembly are the wear items that typically require renewal after extended hot-water and steam service.

What is the first limiting factor when the rebuilt valve runs continuously under steam pressure?

The flow-control element and piston assembly set the pressure and temperature ceiling; sustained operation beyond the valve's rated steam class will cause premature seal extrusion.

How much extra heat does the rebuilt valve add to a mechanical room during all-day operation?

The kit restores the original valve's thermal profile; the valve body itself radiates the same heat as before the rebuild, with no additional power draw.

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