Connexion Direct Acting Pressure Sustaining / Back Pressure Valve
 
Connexion Threaded all 316 Stainless Steel  Direct acting Pressure Sustaining and Back Pressure Valves  are suitable for the fluid of Pure Water, Acid & Alkaline, Steam or Air.
Back pressure valve can maintain required pipeline pressure and flow, and also release over high pressure.
Design of piston and diaphragm improves the inability of sustaining pressure and leakage.
Back pressure chamber controls the valve gate and let gate respond, quickly and adjust pressure accurately.
 
Pressure Adjusting Range :
1 to 5 Bar
4 to 10 Bar 
8 to 13 Bar
 
Applied Temperature : -15C to +210C

 
Valve Body Testing Pressure : 21 Bar

 
Pressure gauge indicates the sustaining pressure. 
 
 
 
 
No
Part Name
Material
1
Gauage
Upon request
2
Cover
316 Stainless Steel
3
O-ring
Viton
4
Shaft
316 Stainless Steel
5
Sealing spacer
Viton
6
Piston
316 Stainless Steel
7
Main body
316 Stainless Steel
8
Diaphragm
Viton
9
O-ring
Viton
10
Spring
Spring Steel
11
Spring cover
316 Stainless Steel
12
Washer
304 Stainless Steel
13
Adjusting stem
304 Stainless Steel
Item No
Size
A(mm)
L(mm)
CV
RFT15-S
1/2"
80
70
2.4
RFT20-S
3/4"
105
85
9.0
RFT25-S
1"
105
92
11.0
RFT40-S
1 1/2"
130
115
21.0
RFT50-S
2"
130
120
25.0

Back pressure (Sustaining) Valve
Installed in branch pipe to maintain the stable pressure of fluid inside pipe. When pressure exceeds setting valve, it will automatically release excess high pressure.

Pressure Relief Valve
Installed in branch pipe. When pressure exceeds setting valve, valve gate will quickly and fully open to release pressure. As pipeline pressure goes down to certain level, valve gate will slowly.

Applied condition of Back Pressure Valve

 
 
 
 
 
In different pressure systems of processing pipelines, installing back pressure valve can maintain required pressure of the systems and ensure safe use of equipments after pressure reducing valve reduces pressure.
 
 
 
 
 
 
 
 
 
 
Installing back pressure valve enables largest flow application and stabilize pipeline pressure.
 
 
 
 
 
Connexion Developments Limited, Easton Business Centre, Felix Road, Easton, Bristol, BS5 0HE
Tel: 01179415814 Fax: 01179415813 Email: sales@solenoidvalvesuk.com Reg. in England No. 3502257