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Reliable Automatic Sprinkler Co., Inc.

(800) 431-1588 

 
 

Sales Of

fices

(800) 848-6051 

 
 

Sales Fax

(914) 829-2042 

 
 

Corporate Of

fices

www

.reliablesprinkler

.com 

 

Inter

net Addr

ess

Manufactur

ed by

Recycled

Paper

 

Revision lines indicate updated or new data.

EG. 

Printed in U.S.A. 

07/19

P/N 9999970425

The 
equipment 

pr

esented in 

this bulletin 

is 

to 

be 
installed in 

accor

dance 

with the 

latest 

published 

Standar

ds of 

the 
National 

Fir

Pr

otection 

Association, 

Factor

Mutual Resear

ch Corporation, or other similar organizations and also with the pr

ovisions of gover

nmental codes or or

dinances whenever applicable.

Pr

oducts manufactur

ed and distributed by Reliable have been pr

otecting life and pr

oper

ty for almost 100 years.

Note:

(1)

 No Solenoid Valve or Control  Panel are utilized with this trim.  If selected, the 6th and 7th digits in the P/N are required to be “0” (None).

(2)

 Not Used

(3) 

Air Compressor sizing may differ if specified sprinkler system has an uncommon volume capacity.

DDX-LP PrePak Valve 

Size/System 

Side Control Valve

U

Trim Type

3

Solenoid Valve

0

Releasing/Control 

Panel

0

Air Compressor

(3)

Y

System Air Devices

Z

2 = 2”

0 = None

0 = None

0 = None

0 = None

0 = 2-1/2”

1 = 1/2 HP 115 VAC 

(systems up to 3” in size)

1 = Nitrogen Supply Kit

3 = 3”

3 = PrePak

(1)

2 = 1 HP 115 VAC 

(for 4” systems)

2 = Nitrogen Supply Kit & 

Model B Accelerator

4 = 4”

3 = 1-1/2 HP 115 VAC 

(for 6” & 8” systems)

3 = NS-ASAM (Nitrogen 

Supply w/ Auto Switchover 

and Monitoring)

6 = 6”

4 = NS-ASAM (Nitrogen 

Supply w/ Auto Switchover 

and Monitoring) & Model 

B Accelerator

8 = 8”

5= Model B Accelerator

A = 2” w/ System Side 

Control Valve

6 = Desiccant Kit

B = 2-1/2” w/ System Side 

Control Valve

7 = Desiccant Kit & 

Model B Accelerator

C = 3” w/ System Side 

Control Valve

D = 4” w/ System Side 

Control Valve

E = 6” w/ System Side 

Control Valve

F =8” w/ System Side 

Control Valve

655   U   3   0   0   Y   Z  0

Ordering Information: PrePak Part Number Configuration

Summary of Contents for DDX-LP PrePak

Page 1: ...le Automatic Sprinkler Company website www reli ablesprinkler com The heart of the Reliable Model DDX LP PrePak is the Model DDX LP Dry Pipe Valve The Reliable Model DDX LP Dry Pipe Valve is a hydraulically operated differential type valve designed for use as a primary control valve in a low pressure dry pipe valve system The trim set used with the Model DDX LP Dry Pipe Valve contains the Reliable...

Page 2: ...mm 32 8 ft 17 7 m 6 150 mm 54 7 ft 21 8 m 8 200 mm 79 3 ft 24 2 m The equivalent length in the table above includes the Model DDX LP PrePak valve supply manifold tee sup ply side control valve and the section of pipe above the Model DDX LP PrePak valve 3 Shipping Weight System Size Weight 2 50 mm 2 65 mm 3 80 mm 554 lb 252 kg 4 100 mm 710 lbs 322 kg 6 150 mm 800 lbs 363 kg 8 200mm 1350 lbs 531kg 4...

Page 3: ...3 Fig 1 ...

Page 4: ...rotected area The air supply sys tem must be carefully designed to prevent plugging by frost deposits Special requirements such as those in FME R s Installation Guidelines for Refrigerated Storage may need to be incorporated Nitrogen used in refrigerated area systems minimizes the possibility of ice build up and blockage inside the system piping that could inhibit proper system operation The dew p...

Page 5: ...nk to drain any condensate ac cumulation Reliable Technical Bulletins 338 and 519 pro vide additional information for maintaining the Model DDX LP PrePak Deluge Valve System Setup Refer to Figure 2 1 Close the main valve controlling water supply to the Model DDX LP PrePak deluge valve Also close the two valves supplying air or nitrogen to the system 2 Close the pushrod chamber supply valve 3 Open ...

Page 6: ...r and Model B Manual Emergency Sta tion for leakage Also verify that tubing drain lines from releasing devices are not pinched or crushed which could prevent proper releasing of the deluge valve 7 Testing alarms Open the alarm test valve permit ting water from the supply to flow to the alarm pressure switch and to the mechanical sprinkler alarm if pres ent After testing close this valve completely...

Page 7: ...Fig 2 7 Model DDX LP Low Pressure Dry Pipe System Valve Legend Note Some items omitted for clarity ...

Page 8: ...8 Fig 3 ...

Page 9: ...9 Fig 4 ...

Page 10: ...e P N are required to be 0 None 2 Not Used 3 Air Compressor sizing may differ if specified sprinkler system has an uncommon volume capacity DDX LP PrePak Valve Size System Side Control Valve U Trim Type 3 Solenoid Valve 0 Releasing Control Panel 0 Air Compressor 3 Y System Air Devices Z 2 2 0 None 0 None 0 None 0 None 0 2 1 2 1 1 2 HP 115 VAC systems up to 3 in size 1 Nitrogen Supply Kit 3 3 3 Pre...

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