RE/REQ Low Pressure Check Valve (Max.60bar)

RE Lift-Type Check Valve (1/2″–21/2″)

Uses
A)RE general-purpose check valve uses rubber sealed disk, featuring good sealing performance and is applicable to air, steam, water, oils and various other liquids and gases.

B)REQ silent check valve has no spring but achieves sealing by gravity of the valve core, achieving very small cracking pressure. It is applicable to: 1) micro-pressure gases; 2) vacuum; 3) applications where vibration and whistling noise caused by low gas flow. It must be horizontally mounted with the bonnet on the top.
Technical Data
● Applicable media: air, steam, water, oils and other gases and liquids (See "Application of Sealing Materials")
● Max. working pressure: See "Table of Technical Data"
● Cracking pressure: 0.2bar (standard for RE); 0.5bar (recommended for oils and other high-viscosity liquids)
● Cracking pressure deviation: all cracking pressures deviation≤±30%
● Disk sealing material: NBR (standard); FPM, EPDM (optional)

● Body material: 304/CF8 stainless steel
● Medium temperature: see "Application of Sealing Materials
● Type of connection: BSPP female thread (ISO228-1)

Product Details
概要描述
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Commodity name: RE/REQ Low Pressure Check Valve (Max.60bar)
Commodity ID: EG00030
小标题: RE Lift-Type Check Valve (1/2″–21/2″)

○ 60bar, -45℃～+180℃ ○ G1/2～21/2/, Stainless Steel ○ For gases and liquids, excellent sealing performance for gases. REQ (optional) is a no-spring silent check valve

Sealant Material Application Chart

Materials	Uses
NBR	Suitable for oil, water, air and other non-corrosive media; Temperature: -35℃～+100℃
FPM	Good acid, alkali and benzene resistance; suitable for most media; not resistant to ammonia;Temperature:-25℃-+180℃
EPDM	Suitable for ammonia, steam, alcohols, ketones; not resistant to mineral oil; Temperature: -45℃～+130℃

Ordering Information

RE Lift Check Valve ( 1/2″～21/2″)

Table of Technical Data [mm]
(*For accurate calculation of gas flow rate and valve pressure drop, , refer to the technical documentation on the valve flow coefficient webpage.)

Models 304/NBR	F	d	L	H	Flow coefficient Kv [M ³ /h]Fully open	Air Flow Rate: N L/min * (Air Pressure: 6～25 bar)	Pressure
RE-G1/2-N-SS	G1/2	13	65	36.0	3.8	≤5130	60bar
RE-G3/4-N-SS	G3/4	18	76	41.0	7.4	≤9990
RE-G1-N-SS	G1	22	90	52.0	10.8	≤14580
RE-G11/4-N-SS	G11/4	28	105	60.0	16.6	≤22410
RE-G11/2-N-SS	G11/2	35	125	69.5	27.2	≤36720
RE-G2-N-SS	G2	44	145	81.5	42.6	≤57510	40bar
RE-G21/2-N-SS	G21/2	56	175	97.0	70.6	≤95310	40bar

Valve Pressure Drop-Flow Rate Curves (Cracking pressure: 0.2 bar, Standard)

Medium: Water (20°C)

Uses
A)RE general-purpose check valve uses rubber sealed disk, featuring good sealing performance and is applicable to air, steam, water, oils and various other liquids and gases.
B)REQ silent check valve has no spring but achieves sealing by gravity of the valve core, achieving very small cracking pressure. It is applicable to: 1) micro-pressure gases; 2) vacuum; 3) applications where vibration and whistling noise caused by low gas flow. It must be horizontally mounted with the bonnet on the top.
Technical Data
● Applicable media: air, steam, water, oils and other gases and liquids (See "Application of Sealing Materials")
● Max. working pressure: See "Table of Technical Data"
● Cracking pressure: 0.2bar (standard for RE); 0.5bar (recommended for oils and other high-viscosity liquids)
● Cracking pressure deviation: all cracking pressures deviation≤±30%
● Disk sealing material: NBR (standard); FPM, EPDM (optional)
● Body material: 304/CF8 stainless steel
● Medium temperature: see "Application of Sealing Materials
● Type of connection: BSPP female thread (ISO228-1)

Sealant Material Application Chart

Materials	Uses
NBR	Suitable for oil, water, air and other non-corrosive media; Temperature: -35℃～+100℃
FPM	Good acid, alkali and benzene resistance; suitable for most media; not resistant to ammonia;Temperature:-25℃-+180℃
EPDM	Suitable for ammonia, steam, alcohols, ketones; not resistant to mineral oil; Temperature: -45℃～+130℃

Ordering Information

RE Lift Check Valve ( 1/2″～21/2″)

Table of Technical Data [mm]
(*For accurate calculation of gas flow rate and valve pressure drop, , refer to the technical documentation on the valve flow coefficient webpage.)

Models 304/NBR	F	d	L	H	Flow coefficient Kv [M ³ /h]Fully open	Air Flow Rate: N L/min * (Air Pressure: 6～25 bar)	Pressure
RE-G1/2-N-SS	G1/2	13	65	36.0	3.8	≤5130	60bar
RE-G3/4-N-SS	G3/4	18	76	41.0	7.4	≤9990
RE-G1-N-SS	G1	22	90	52.0	10.8	≤14580
RE-G11/4-N-SS	G11/4	28	105	60.0	16.6	≤22410
RE-G11/2-N-SS	G11/2	35	125	69.5	27.2	≤36720
RE-G2-N-SS	G2	44	145	81.5	42.6	≤57510	40bar
RE-G21/2-N-SS	G21/2	56	175	97.0	70.6	≤95310	40bar