Diaphragm Structure Back Pressure Valve Pressure Relief Valve for Chemical Dosing System

• Media: Chemical Liquid etc
• Certification: ISO
• Temperature: Ordinary Temperature
• Connection: Thread,Flange and Can Be Customized
• Pressure: Adjustable
• Closed: Semi-Closed
• Model NO.: RXBF
• Structure: Spring
• Material: PVC
• Adjustable Pressure: 0-1.0MPa, 0-2.0MPa, 0-3.0MPa
• Materials for Lower Valve Body: PVC,SS304,SS316L, PTFE,PVDF,PP, Carbon Steel etc
• Materials for Diaphragm: EPDM Lining PTFE Diaphragm,PTFE Diaphragm
• Material for Upper Valve Body: PVC, Carbon Steel,SS304,SS316L etc
• Transport Package: Cartons, Boxes, Pallet and Customizable
• Origin: China

Product Description

Features of  Back Pressure Valves

• With Diaphragm structure spring and the pressure will be adjustable.
• The medium contacting parts are only the lower valve body and the diaphragm and they are assembled with sealing rib which has good sealing effect and high sensitivity.
• EPDM lining PTFE with Cloth type diaphragm has a very good sealing effect and long service life, The PTFE type diaphragm has a very good performance in high temperature resistance corrosion resistance.

Connection type	Thread, flange etc. and can be customized
Adjustable pressure	0-0.3MPa,0-1.0MPa
Safety test pressure	1.5 times the maximum input pressure
Applicable temperature	-5ºC to +80ºC for EPDM lining PTFE diaphragm -5ºC to +80ºC for PTFE diaphragm
Available materials
Materials for Lower valve body	PVC,SS304,SS316L,PTFE,PVDF,PP,carbon steel etc
materials for diaphragm	EPDM lining PTFE diaphragm,PTFE diaphragm
Material for upper valve body	PVC,carbon steel(nickel plated,black oxide etc.), SS304,SS316L

Specifications and models of back pressure valve

Models	Material	Dia.(mm)	Pressure(MPa)	Size		Connection
				D(mm)Lower valve body	H(mm)
RXBF-P6/1.0	PVC	6	0.1-1.0	64.7	82	Rc1/8"
RXBF-P8/1.0	PVC	8	0.1-1.0	64.7	87	Rc1/4"
RXBF-P10/1.0	PVC	10	0.1-1.0	64.7	89	Rc3/8"
RXBF-P15/1.0	PVC	15	0.1-1.0	64.7	94	Rc1/2"
RXBF-P20/1.0-N	PVC	20	0.1-1.0	64.7(for pumps flow≤250L/h)	104	Rc3/4"
RXBF-P20/1.0				87	123
RXBF-P25/1.0	PVC	25	0.1-1.0	87	128	Rc1"
RXBF-P32/1.0	PVC	32	0.1-1.0	117	175	Rc1+1/4"
RXBF-P40/1.0-N	PVC	40	0.1-1.0	117(for pumps flow≤2500L/h)	185	Rc1+1/2"
RXBF-P40/1.0				137	240
RXBF-P50/1.0	PVC	50	0.1-1.0	167	260	Rc2"
RXBF-P65/1.0	PVC	65	0.1-1.0	177	325	Rc2+1/2"
RXBF-P80/0.6	PVC	80	0.1-0.6	230	420	Rc3"
RXBF-P100/0.6	PVC	100	0.1-0.6	250	430	Rc4"
RXBF-S6/1.0	SUS304/316L	6	0.1-1.0	64.7	82	Rc1/8"
RXBF-S8/1.0	SUS304/316L	8	0.1-1.0	64.7	87	Rc1/4"
RXBF-S10/1.0	SUS304/316L	10	0.1-1.0	64.7	89	Rc3/8"
RXBF-S15/1.0	SUS304/316L	15	0.1-1.0	64.7	94	Rc1/2"
RXBF-S20/1.0-N	SUS304/316L	20	0.1-1.0	64.7(for pumps flow≤250L/h)	104	Rc3/4"
RXBF-S20/1.0				87	123
RXBF-S25/1.0	SUS304/316L	25	0.1-1.0	87	128	Rc1"
RXBF-S32/1.0	SUS304/316L	32	0.1-1.0	117	175	Rc1+1/4"
RXBF-S40/1.0-N	SUS304/316L	40	0.1-1.0	117	185	Rc1+1/2"
RXBF-S40/1.0				137	240
RXBF-S50/1.0	SUS304/316L	50	0.1-1.0	167	260	Rc2"
RXBF-S65/1.0	SUS304/316L	65	0.1-1.0	177	325	Rc2+1/2"
RXBF-S80/0.6	SUS304/316L	80	0.1-0.6	225	420	3"flange type
RXBF-S100/0.6	SUS304/316L	100	0.1-0.6	240	430	4"flange type