Brochure

See Safety & Relief Valve Catalog (SRCA9000) for more detailed information about the products in this section.
79
500 SERIES
ASME SECTION VIII SAFETY RELIEF VALVES
Versatile ASME Section VIII safety relief valve certied for steam, air/gas and
liquid service. Choice of bronze, carbon steel or stainless steel bodies to suit
a wide range of applications.
FEATURES
• Set pressures to 1200 psig @ 800°F max
• Inlet sizes 1/2” through 2”
• Wide range of materials and options
• High capacity full nozzle design
• Stainless steel springs are standard
• Short “tuned” blowdown
• API 527 seat tightness
• Back pressure tight bonnet design
• Packed lever and screwed cap designs
• One trim suitable for all types of service
• Optional soft seating
• CSA B51 CRN #0G8547.5C
• Optional Dual ASME/CE European Pressure Equipment Directive
Compliance Marking
• Made in USA
Series
Number
Valve
Size (in.)
Orice
Letter
Flow
Area
(sq. in.)
Dimensions (in.)
Wt. Ea.
(lbs.)
A B C
5xxDC 1/2 X 1 D 0.13 2.37 7.50 1.62 2.0
5xxDCD* 1/2 X 3/4 D 0.13 2.37 7.50 1.62 2.0
5xxDD 3/4 X 1 D 0.13 2.37 7.50 1.62 2.0
5xxDDD* 3/4 X 3/4 D 0.13 2.37 7.50 1.62 2.0
5xxED 3/4 X 1-1/4 E 0.23 2.62 9.00 2.00 3.0
5xxEE 1 X 1-1/4 E 0.23 2.62 9.00 2.00 3.0
5xxFE 1 X 1-1/2 F 0.36 2.87 10.25 2.37 5.0
5xxFF 1-1/4 X 1-1/2 F 0.36 2.87 10.25 2.37 5.0
5xxGF 1-1/4 X 2 G 0.59 3.25 13.25 2.62 9.0
5xxGG 1-1/2 X 2 G 0.59 3.25 13.25 2.62 9.5
5xxHG 1-1/2 X 2-1/2 H 0.92 3.50 15.00 2.75 15.5
5xxHH 2 X 2-1/2 H 0.92 3.50 15.00 2.75 16.0
5xxJH 2 X 3 J 1.50 4.00 17.00 3.25 23.0
* 3/4” outlet option available with 510 and 520 bronze bodied models only.
A
B
C
A
B
C
Notes:
1. The ASME Code Section VIII requires a lift lever for the following services: air, steam, or hot water over 140°F
2. Maximum back pressure is 50 psig.
3. High temperature stainless steel alloy spring is required above 550°F / 288°C. Specify option “HT”
4. Contact factory for pricing and availability.
500 SERIES NUMBERING SYSTEM
52 3 J H B K M AA 0425 Q
SERIES BODY/
TRIM MATERIAL
CAP
ORIFICE
LETTER
INLET
SIZE
CONNECTION SERVICE SEAT SPECIAL OPTIONS
SET
PRESSURE
SUFFIX
51 = Bronze/Brass 1 = Screwed Cap D C = 1/2 B = MNPT x NPT J = Sec VIII Liquid M = Metal
Factory Issued
Letters/Numbers for
Special Options or
Features
Set Pressure, PSIG
(4 digits)
Q = Performance
(Calibration)
Test Reports
52 = Bronze/Stainless 2 = Screwed + Gag E D = 3/4
D = 3/4 Outlet
(Model 510 &
520 D Orice Only)
K = Sec VIII Air/Gas B = BUNA-N
53 = Carbon/Stainless 3 = Packed Lever F E = 1 L = Sec VIII Steam E = EPR
54 = All Stainless 4 = Packed + Gag G F = 1-1/4 M = Non Code Liquid K = PCTFE Vacuum “HG”
H G = 1-1/2 N = Non Code Air N = Neoprene “AA” = Default Setting Prex + 2 digits
J H = 2 P = Non Code Steam Z = Kalrez® “CE” = CE/PED
Q = Vacuum S = Silicone “HT “ = High Temp Spring
V = Viton “OX “ = Cleaned for Oxygen
A
S
M
E
UV
SAFETY RELIEF VALVES