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ManualsBrandsElkhart Brass ManualsEquipmentELKHART PRESSURE-MATIC VALVES

ELKHART BRASS MANUFACTURING COMPANY

INSTALLATION and OPERATING INSTRUCTIONS

for

PRESSURE-MATIC®

AUTOMATIC PRESSURE REDUCING VALVES

I. Models and Sizes Covered:

UR-20, 1-1/2" size, bonnet types W,X,Y,YZ,Z,ZA,ZB,ZZ & ZZA

UR-25, 1-1/2" size, bonnet types W,X,Y,YZ,Z,ZA,ZB,ZZ & ZZA

UR-20, 2-1/2" size, bonnet types A,B,C,CD,D,DE,E,EF & F

UR-25, 2-1/2" size, bonnet types A,B,C,CD,D,DE,E,EF & F

UR-20S, 2-1/2" size, bonnet types A,B,C,CD,D,DE,E,EF & F

Inlet and Outlet Connections:

Valve Model & Size

*Inlet Thread

*Outlet Thread

UR-20, 1-1/2"

1-1/2" fem. NPT

UR-25, 1-1/2"

1-1/2" fem. NPT

1-1/2" male NH

UR-20, 2-1/2"

2-1/2" fem. NPT

UR-25, 2-1/2"

2-1/2" fem. NPT

2-1/2" male NH

UR-20S, 2-1/2"

2-1/2" fem. NPT

*NPT = American National Standard Taper Pipe Threads (ANSI/ASME B1.20.1-1983, R2006)

NH = American National Fire Hose Connection Screw Thread (NFPA 1963-2009 Ed.)

II. Application Guidelines:

A. Automatic Sprinkler Systems

Pressure-Matic® valves are most commonly used in automatic sprinkler systems as floor control valves in high-

rise buildings where supply riser pressures exceed 175 psi. These valves are listed by Underwriters Laboratories

as Special System Water Control Valves-Pressure Reducing and Pressure Control Type (VLMT), and also meet

the listing requirements for indicating valves. Requirements for the installation of pressure reducing valves in

automatic sprinkler systems are given in Section 4-6.1.2 of NFPA 13, Standard for the Installation of Sprinkler

Systems, Latest Edition. When designing Pressure-Matic® valves into a sprinkler system, the following maximum

flow rate limits should be observed:

98278000 Rev

Summary of content (10 pages)

PAGE 1
ELKHART BRASS MANUFACTURING COMPANY INSTALLATION and OPERATING INSTRUCTIONS for PRESSURE-MATIC® AUTOMATIC PRESSURE REDUCING VALVES I.
PAGE 2
Valve Model UR-20 & UR-25 2-1/2" UR-20S 2-1/2” UR-20 & UR-25 1-1/2" Bonnet Type A B C CD D DE E EF F A B C CD D DE E EF F W X Y YZ Z ZA ZB ZZ ZZA Max. Flow (gpm) 500 500 500 500 500 500 500 500 500 400 400 400 400 400 400 400 400 400 200 200 200 200 200 200 200 200 200 Max.
PAGE 3
For proper installation of bracket and switch, see instruction sheet which accompanies bracket kit, and also refer to switch manufacturer's instructions. Sprinkler System Installation Requirements 1. To permit easy replacement or repair of valve, pipe unions or rubber gasketed mechanical couplings should be installed immediately upstream or downstream of the valve. 2. A relief valve of not less than 1/2 inch size is to be installed on the downstream side of each Pressure-Matic® valve. 3.
PAGE 4
this pressure reduction ratio will tend to decrease with increase of flow rate through the valve. This behavior results due to friction loss through the valve. B. Valve Type Selection To determine the correct type (bonnet) for each Pressure-Matic® valve in the system design, please use the following steps. 1. Determine the standpipe or sprinkler riser residual pressure for each valve location. This is the inlet pressure at each valve under design flow conditions.
PAGE 5
IV. Valve Care & Maintenance: Pressure-Matic® valves require minimal maintenance, and can normally serve reliably for twenty years or longer in fire protection systems. However, a routine inspection and testing program is essential for any fire protection system to insure that it is in proper operating condition. NFPA 25, Standard for the Inspection, Testing and Maintenance of Water-Based Fire Protection Systems should be consulted for a determination of required test frequency and methods.
PAGE 6
Fig. I Model UR-20S, 2-1/2" B A 400 C CD 380 D 360 340 DE 320 VALVE INLET RESIDUAL PRESSURE (PSI) 300 E 280 260 EF 240 F 220 200 180 160 140 120 USE THIS CHART FOR 50-100 GPM FLOW 100 80 60 50 75 100 125 150 175 VALVE OUTLET PRESSURE (PSI) Fig.
PAGE 7
Fig. III Model UR-20S, 2-1/2" B A 400 C CD 380 D 360 340 DE 320 VALVE INLET RESIDUAL PRESSURE (PSI) 300 E 280 260 EF 240 F 220 200 180 160 140 120 USE THIS CHART FOR 200-300 GPM FLOW 100 80 60 50 75 100 125 150 175 VALVE OUTLET PRESSURE (PSI) Fig.
PAGE 8
Fig. V Model UR-20 & 25, 2-1/2" B A 400 C CD 380 D 360 340 DE 320 VALVE INLET RESIDUAL PRESSURE (PSI) 300 E 280 260 EF 240 F 220 200 180 160 140 120 USE THIS CHART FOR 50-400 GPM FLOW 100 80 60 50 75 100 125 150 175 VALVE OUTLET PRESSURE (PSI) Fig.
PAGE 9
ULC APPROVED TO 400 PSI Fig. VII Model UR-20 & 25, 1-1/2" X W 400 UL APPROVED TO 300 PSI Y YZ 380 360 340 320 Z VALVE INLET RESIDUAL PRESSURE (PSI) 300 ZA 280 260 ZB 240 ZZ 220 200 ZZA 180 160 140 120 USE THIS CHART FOR 50-200 GPM FLOW 100 80 60 50 75 100 125 150 175 VALVE OUTLET PRESSURE (PSI) ULC APPROVED TO 400 PSI Fig.
PAGE 10
Fig. IX Model UR-20, UR-25 & UR-20S, 2-1/2" B A 400 C CD 380 D 360 340 DE 320 300 E VALVE INLET STATIC PRESSURE (PSI) 280 260 EF 240 F 220 200 180 160 140 120 USE THIS CHART FOR STATIC OUTLET 100 80 60 50 75 100 125 150 175 VALVE OUTLET PRESSURE (PSI) ULC APPROVED TO 400 PSI Fig.