Compressed Gas

5074 Series: Brass Diaphragm Valves

• Anti-Extrusion pin feature prevents seat extrusion and cold flow of the polymeric seat

• Four non-perforated metal diaphragms prevent leakage and insure trouble-free operation over long periods of service

• Available in multiple seat material configurations to accommodate all high purity gas applications.

• Increased flow (Cv) to aid in reducing vent and purge times

• Low operating torque design to ensure ease of operation during filling and use

• Available with unitized pressure relief device which is equipped with a webbed washer design to protect the burst disc from damage during transportation and replacement

• Optional inlet threads for dip tube assembly

• Available with standard CGA connections as well as International inlets and outlets

Brass Packless Diaphragm Valves
Valve Series	5074 Series		5074X15 Series	5074 International Series
Inlets	¾" – 14NGT 3/8" – 14NGT ½” – 14 NGT		1 1/8” – 12 UNF – 2A	BS 341, DIN 477, JIS, All other available upon request
Outlets	CGA		CGA	CGA, DISS, BS 341, DIN 477, JIS All other available upon request
Seat Material	Nylon 6/6 PCTFE PVDF Vespel®		Nylon 6/6 PCTFE PVDF Vespel®	Nylon 6/6 PCTFE PVDF Vespel®
Pressure Relief Device
Burst Pressure @ 165° F	A - 3000 PSIG B - 3360 PSIG C - 3775 PSIG D - 4000 PSIG
Burst Disc Material	Nickel 200 Copper Stainless Steel
Type (Per to CGA S1.1 latest edition)	None, where prohibited CG-1 Burst Disc Only CG-2 Fuse Plug 165° F Fusemetal CG-4 Burst Disc w/ 165° F Fusemetal CG-5 Burst Disc w/ 212° F Fusemetal
Optional Features
Outlet: Tapped for 5/16- 24 UNF flow restrictor Inlet Tap – Available in ¼” - NPT or 10 mm
Specifications
Max Service Pressure:		3000 PSIG			200 Bar
Temperature Range:		-50^○F→ 120^○ F			-45^○C → 49^○ C
Leak Rate @ 2000 PSIG (138 bar):		1x10^-7atm cc/sec			1x10^-7bar mL/sec
Closing Torque:		50 in-lbs @ 2000 PSIG			5.6 N-m @ 138 bar
Cv:		.635			.635

"XX" denotes safety disc rupture pressure based on D.O.T. cylinder service pressure.

Example: 5074-580B for a 3360 burst disc (See chart below)

PRD BURST PRESSURE CHART
SUFFIX	PSIG
A	3000
B	3360
C	3775
D	4000

To order a CG-4 Burst Disc w/ 165° F Fusemetal add an “M” in the part number

Example: 5074-580XM

CG-5 Burst Disc w/ 212° F Fusemetal add an “W” in the part number

Example: 5074-580XW

To order oversize or non-standard 3/4" inlet threads, add the following to the part number:
-4 for 4 threads oversize
            Example: 5074-580XX becomes 5074-580XX-4

-7 for 7 threads oversize
            Example: 5074-540XX becomes 5074-540XX-7

-X15 for 1-1/8" straight UNF threads used with 0-ring seal
            Example: 5074-350XX becomes 5074X15-350XX

Limitation Note - Maximum cylinder fill pressure (including overfill) for all 5074 Series valves is: 3520 PSI @ 70° F 4000 PSI @ 120° F

For more information on available valve configurations, please contact factory or your local Sherwood distributor.