Comparison : Item # CT300YS-1/2, Thermostatic Steam Trap Balanced Pressure Design - CT300Y Series
Item # CT300YS-3/4, Thermostatic Steam Trap Balanced Pressure Design - CT300Y Series
Item # CT300YS-1, Thermostatic Steam Trap Balanced Pressure Design - CT300Y Series
Item # CT300YW-1/2, Thermostatic Steam Trap Balanced Pressure Design - CT300Y Series
Item # CT300YW-3/4, Thermostatic Steam Trap Balanced Pressure Design - CT300Y Series