HI-Q PRESSURE RELIEF VALVE0 pages

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PRODUCT DATA SHEET

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Innovation in Miniature

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Hl-Q PRESSURE RELIEF VALVE

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The Lee Company's new Hi-Q Pressure

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Relief Valve is designed for applications

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that require both a high relief pressure and

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a high flow rate in a compact package.

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This new relief valve is capable of relief

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pressures up to 5400 psid and flow rates

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over 19 GPM. The valve utilizes aside inlet

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flow path to help minimize the installation

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boss size and weight.

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The Hi-Q Pressure Relief Valve is offered

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in a range of cracking pressures from 1000

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to 5400 psid. It is designed for nominal

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system pressures up to 5000 psi and sys-

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tem peak pressures up to 6750 psi. Each

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Lee Pressure Relief Valve is 100% tested

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and inspected to ensure reliable, consistent

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performance.

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PERFORMANCE

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Leakage at Minimum

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Cracking Pressure:........1 mL/min max

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Leakage at Minimum

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Shutoff Pressure:......... 1 mL/min max

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External Leakage:...........................0 mL

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Restriction at Minimum

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Recommended Valve Lift:...600 Lohms

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Nominal System Pressure:.. up to 5000 psi

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System Peak Pressure:.....6750 psi max

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Non-Relief Direction

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Differential Pressure:......500 psid max

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Nominal Weight:.....................200 grams

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Valve performance on MIL-PRF-83282

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or MIL-PRF-5606 at 85°F +/- 15°F

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Capable of Flow Rates Over

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19 GPM

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Cracking Pressures up to

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5400 psid

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100% Tested and Inspected

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Designed for System Pressures

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up to 5000 psi

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Endurance Tested in Excess of

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100,000 Cycles

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	--3 . 88 1.00 HEX —V LOCKWIRE H0LE^>
I . 90 I

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FOR AS568-116 0-RING

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.8125-20 UNJEF-3A

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0-RING WITH ONE BACKUP RING

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GLAND PER SAE AS4716-015

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Relief

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Flow

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See reverse side for installation hole.

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PART	MATERIAL	SPECIFICATION
Body	304 CRES	AM S 5639
Poppet Retainer	304 CRES	AM S 5639
Spring Seat	304 CRES	AM S 5639
Spring Seat Vent	316L CRES	(Sintered)
Spring Guide	304 CRES	AM S 5639
Seat	15-5PH CRES	AM S 5659
Piston	Nitronic 60	AM S 5848
Springs	17-7PH CRES	AM S 5678
Poppet	Polyimide
Piston Seals	Viton	AMS-R-83485
	PTFE	AS 8791

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Finish: All CRES Parts Passivateci.

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	MINIMUM				MINIMUM
LEE PART NUMBER	CRACKING PRESSURE (psid)	LOHM* RATE	MIN FLOW (GPM)	AT (psid)	SHUTOFF PRESSURE (psid)
PRVA0812010H	1000	75	11.3	1500	850
PRVA0812012H	1200	75	11.8	1650	1000
PRVA0812014H	1400	75	12.7	1900	1200
PRVA0812022H	2200	75	15.1	2750	2000
PRVA0812024H	2400	75	15.9	3000	2200
PRVA0812032H	3200	75	18.5	4050	3000
PRVA0812034H	3400	75	19.0	4250	3200
PRVA0812042H	4200	100	15.8	5250	4000
PRVA0812044H	4400	100	16.2	5500	4200
PRVA0812052H	5200	100	17.6	6500	5000
PRVA0812054H	5400	100	17.9	6750	5200

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THE LEE COMPANY, 2 PETTIPAUG Rn., P.O. BOX 424, WESTBROOK, CT 06498-0424

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* The Lohm is a measure of flow resistance. Additional information can be found on the

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reverse side and at www. TheLeeCo.com.

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NOTE: Pressures in excess of 500 psid in the non-relief flow direction may cause damage to the

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valve's critical sealing surfaces.

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Tel: 860-399-6281

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Fax, Order Entry: 860-399-7058

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Fax, Technical Information: 860-399-7037

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PDS 107 5/11 Web: www.TheLeeCo.com

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