Emerson Spence N650 Series Instruction Manual

Instruction Manual
VCIMD-16893
November 2021
Spence N650 Series Thermostatic Steam Traps
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Failure to follow these instructions or
to properly install and maintain this
equipment could result in an explosion,
fire and/or chemical contamination
causing property damage and personal
injury or death.
N650 Series steam trap must be
installed, operated and maintained
in accordance with federal, state and
local codes, rules and regulations and
Emerson instructions.
If leak develops in the system, service
to the unit may be required. Failure
to correct trouble could result in a
hazardous condition.
Installation, operation and maintenance
procedures performed by unqualified
personnel may result in improper
adjustment and unsafe operation. Either
condition may result in equipment
damage or personal injury. Only a
qualified person shall install or service
the N650 Series steam trap.

Introduction

Scope of the Manual

This manual provides instructions for installation,
maintenance and parts information for the N650 Series
Thermostatic Steam Traps.

Product Description

A steam trap is an automatic valve which discharges
condensate, undesirable air and non-condensibles
from a system while trapping, or holding in, steam.
Thermostatic steam traps operate in direct response to
the temperature within the trap.
WARNING
Figure 1. N650 Series Thermostatic Steam Trap
N650 Series is a balanced pressure design
with stainless steel welded actuator capable of
discharging condensate within 10°F / -12°C of
saturated temperature.
For greater sensitivity or protection from flash steam
locking, SLR orifice is available to allow condensate
and flash steam evacuation at or near saturated
temperatures. If subcooling of condensate is desired,
alternate thermostatic actuator is available to allow
condensate evacuation at or near 40°F / 4.4°C below
saturated temperatures.
Thermostatic actuator has a conical valve lapped in
matched sets with the seat ring assuring tight shut off.
A minimum of four orifice sizes is available allowing
for custom capacity sizing. Trap is forged carbon steel
Y pattern body with strainer and blow down valve
suitable for pressures up to 650 psig / 44.8 bar and
available in NPS 1/2 and 3/4 / DN 15 to 20 in NPT or
socket weld end connection.
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N650 Series