IR-WW-736

The Model 736 Differential Pressure Sustaining Valve
is a hydraulically operated, diaphragm actuated control
valve that sustains minimum pre-set, differential pressure
between two points regardless of fluctuating flow or
varying upstream pressure.

IR-WW-730-55

The Model 730-55 Pressure Relief/Sustaining Valve
with Solenoid Control is a hydraulically operated,
diaphragm actuated control valve that sustains minimum
pre-set, upstream (back) pressure regardless of
fluctuating flow or varying downstream pressure.
It also either opens or closes in response to an
electric signal. When installed as a circulation valve,
the Model 730-55 relieves excessive line pressure
when above maximum pre-set.

IR-WW-730

The Model 730 Pressure Relief/Sustaining Valve is a
hydraulically operated, diaphragm actuated control
valve that can fulfill either of two separate functions.
When installed in-line, it sustains minimum pre-set,
upstream (back) pressure regardless of fluctuating flow
or varying downstream pressure.
When installed as a circulation valve, it relieves excessive
line pressure when above maximum pre-set.

IR-WW-723

The Model 723 Pressure Reducing and Sustaining
Valve is a hydraulically operated, diaphragm actuated
control valve with two independent functions. It sustains
minimum pre-set upstream pressure regardless of
fluctuating flow or varying downstream pressure, and
it prevents downstream pressure from rising above
maximum pre-set regardless of fluctuating flow or
excessive upstream pressure.

IR-WW-720-55

The Model 720-55 Pressure Reducing Valve with
Solenoid Control is a hydraulically operated, diaphragm
actuated control valve that reduces higher upstream
pressure to lower constant downstream pressure
regardless of fluctuating demand or varying upstream
pressure. The valve opens and shuts off in response
to an electric signal.

IR-WW-73Q

The Model 73Q Quick Pressure Relief Valve is a
hydraulically operated, diaphragm actuated control
valve that relieves excessive system pressure when
this pressure rises above the pre-set value. It
immediately, accurately, and with high repeatability
responds to system pressure rise by fully opening. The
Model 73Q provides smooth drip tight closing.

IR-WW-750-80-X

The Model 750-80-X Level Control Valve is a hydraulically
controlled, diaphragm actuated control valve that shuts
off at pre-set reservoir high level and fully opens in
response to an approximately one meter (three foot)
level drop, as sensed by the 3-Way altitude pilot
mounted on the main valve.

IR-WW-750-66-B

The Model 750-66-B Level Control Valve with Bi-Level
Vertical Float is a hydraulically controlled, diaphragm
actuated, double chambered control valve. The valve
is hydraulically powered to fully open at pre-set reservoir
low level, and to shut off at pre-set high level regardless
of valve differential pressure.

IR-WW-743

The Model 743 Booster Pump Control & Pressure
Sustaining Valve is a hydraulically operated, diaphragm
actuated active check valve that opens or shuts off in
response to electric signals. It isolates the pump from
the system during pump starting and stopping, to
prevent pipeline surges. While open, it sustains minimum
discharge pressure regardless of fluctuating flow.

IR-WW-750-65

The Model 750-65 Level Control Valve with Bi-Level
Electric Float is a hydraulically operated, diaphragm
actuated control valve that controls reservoir filling in
response to an electric float switch signal, opening at
pre-set low level and shutting off at pre-set high level.
The double chamber actuated Model 750-65-B is
powered to fully open and close even at very
low pressure.

IR-WW-735-M

The Model 735-M Surge Anticipating Valve is an off-line,
hydraulically operated, diaphragm actuated valve. The valve,
sensing line pressure, opens in response to the pressure drop
associated with abrupt pump stoppage. The pre-opened
valve dissipates the returning high pressure wave, eliminating
the surge.
The Model 735-M smoothly closes drip tight as quickly as
the relief feature allows, while preventing closing surge.
The valve also relieves excessive system pressure.