Dormont 4000BLT User Manual

Series 4000BLT

Portable Hydrant Backflow

ES-A-4000BLT

Features

• Built-In support leg is adjustable in
the field, no matter the installation.
Eliminates assembly from sitting

ectly in field or from being stacked

dir
on wood

• Dual thread connections, inside 2
FNPT and outside 3" MNPT threaded
on each inlet and outlet, allows the
user a variety of connection alterna­tives

• Large flow capacity-rated at over 500
gpm with less than 14psi loss per
ASSE, USC and AWWA standards for
Reduced Pressure Zone Assemblies

• No field assembly required, eliminates
leaks, fouls, and improper assembly

• Factory assembled and tested.

• Varieties of end connection acces­sories are available to fit on-site
requirements

• Corrosion resistant 304 stainless steel
body for long life field dependability.

• Portable-lightweight design makes
device easily transportable between
job sites

Materials

Body & cover: SST

Check assemblies: Eng. Plastic & SST

RV assembly: Eng. Plastic & SST

Lid coupler: DI/CI

4000BLT

1

⁄2"

Series 4000BLT Portable Hydrant Backflow is for use in protection of potable
water from a fire hydrant or other nonpermanent installations where flow is in
one direction only and the possibility of a cross-connection exists. Ideal for
use with client's existing hydrant meter hookup. Series 4000BLT Portable
Hydrant Backflow is designed and manufactured to provide long-term service
with minimal maintenance. When maintenance is required, it can be performed
easily at the hydrant or at any other convenient location. As an alternative to
repair by the utility, Ames can arrange a maintenance program to fit the needs
of the utility.

Specifications

Series 4000BLT Portable Hydrant Backflow is designed to protect the potable
water system in accordance with national plumbing codes and water authority
requirements, by preventing backflow through the fire hydrant during site con­struction phase. Water flows through the pre-tested Reduced Pressure Zone
Assembly. The Series 4000BLT consists of two independently operating,
spring loaded cam-check valves with a hydraulically operated differential pres­sure relief valve located between and below the cam-checks. When normal
flow exists, both checks ar
checks called the zone, is at least 2psi lower than the inlet pr
tion of normal flow occurs, the differential pressure relief valve will automati­cally open and discharge to maintain the zone at least 2psi lower than the inlet
pressure. Series 4000BLT comes standard with an adjustable mounting bracket,
sturdy relief valve shield, dual thread connections and other options. Standard
valve shown with 3" MNPT and 2

e open and the pr

1

⁄2" FNPT each end.

essur

e in the ar

ea between the

e. If cessa

essur

-

Job Name ________________________________________________ Contractor ____________________________________________

Job Location ______________________________________________ Approval ______________________________________________

Engineer__________________________________________________ Contractor’s P.O. No. ______________________________________

Approval__________________________________________________ Representative __________________________________________

te and are provided for reference only. For precise measurements, please contact Ames Technical Service. Ames reserves the right

y units and metric are a

Ames product specifications in U.S.
to change or modify product design, construction, specifications, or materials without prior notice and without incurring any obligation to make such changes and modifications on Ames products previously or
subsequently sold.

customar

pproxima

www

.amesfir

ewater.com

Approvals

Series 4000BLT Portable Hydrant Backflow
meets the design requirements of most
national standards. Due to the portability of
the unit, there are no national approvals
available.

Options

Inlet modules

• 3" female hydrant thread

• 3" male hydrant thread

1

•

⁄2" female hydrant thr

2

•21⁄2" male hydrant thread

•21⁄2" male NPT thread

• Customer specified

Outlet modules

• 3" gate w/female hose thread

• 3" gate w/male hose thread

•21⁄2" gate w/female hose thread

1

⁄2" gate w/male hose thread

•2

• 3" gate valve only, 3" MNPT thread

•21⁄2" gate valve only, 21⁄2" FNPT thread

• Customer specified

Foot modules

• Uneven surface saddle (supplied
standard with unit)

• Flat surface adapter

• Customer Specified

ead

alve hose

Relief v

1st cam-check assembly

Relief valve hose

Mounting bracket saddle

Series 4000BLT Flow Characteristics

kPa psi

138 20

103 15

69 10

34 5

201/8"

Groove coupler

2nd

cam-check

assembly

Relief valve
assembly

alve shield

Relief v

Mounting bracket rod adjustment

*

Assemble outlet

module here If

required

/4"

1

/4 =

1

8

/4"

1

/16 =

3

9

21 3

00

0 100 200 300 400 500 600 gpm
0 380 760 1140 1520 1900 2280 lpm

5 7.5 10 15 fps

1.5 2.3 3 4.6 mps

Flow Rate

oximate headloss at the UL rated flow.

*Appr

MODEL

SIZE / INLET SIZE / OUTLET

4000BLT 21⁄2" FNPT / 3" MNPT 21⁄2" FNPT / 3" MNPT

.com

A Division of W

atts Regulator Company

www

.amesfir

ewater

1427 North Market Blvd. • Suite #9 • Sacramento, CA 95834 • Phone: [phone] • Fax: [phone]

ES-A-4000BLT 0312 ©Ames Co. 2003 Printed in U.S.A.