Plastic Back Pressure Release Valve

• Customization: Available
• Media: Water
• Standard: Pn10,Pn16
• Connection: Thread
• Pressure: Adjustable
• Closed: Semi-Closed
• Structure: Spring
• Material: Plastic
• Body: UPVC,CPVC,PVDF,Pph
• Ftf: According to Manufacture
• Certificate of Origin: China Customs Authorization
• Brand: Ourselves or OEM
• Transport Package: Wooden
• Specification: DN15~DN65
• Trademark: FREE-VALVE
• Origin: China
• HS Code: 8481809000
• Production Capacity: 200 Set/Month

Product Description

FREE-VALVE plastic  back pressure valve  is installed in the line of positive pressure discharge of metering pump,its function is to prevent siphon phenomenon occur.Removing the protective cap on the adjusting screw on site, then rotating and adjusting screw , the required pressure will be got by adjusting pressure gauge in the pipeline. Back pressure will be set within the range of 0-0.6 MPa by adjusting screw .



Advantage :

1. It reduces damage to the system by water hammers, so that the system will achieve superior low vibration effect.
2. It will keeping a certain constant pressure from the pump outlet port to the back pressure valve.
3.  Keep the system flow rate is constant.
4.  Keep the stability of system pressure.

Technical Specification

1	Size Range	DN15~DN65
2	Nominal pressure	Class 150 /PN10/PN16
3	Applicable Temperature	0~120ºC
4	Connection Type	Flange ,Union
5	Body material	RPP, PVDF, CPVC, UPVC
6	Pressure test	GB/T13927, API598
7	Face to Face	GB/T12221, ASME B16.10

APPLICATION TEMPERATURE BOUND LIST

Material	Medium temperature,°C	Material	Medium temperature,°C
CPVC	-20°C~+95°C	UPVC	0°C~+65°C
FRPP	-14°C~+90°C	PPH	-20°C~+110°C
PVDF	-40°C~+150°C

Main outline and connection dimensions

DN	PN	L	D	d	H
DN15	PN10	166	82	20	154
DN20		170	82	25	173
DN25		212	107	32	173
DN32		226	107	40	173
DN40		292	148	50	225
DN50		305	148	63	225
DN65		390	148	75	225

Application

FREE-VALVE plastic safety valve is widely used in chemical industry, water treatment, laboratory, corrosive liquid, ordinary gas and other fields.