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 Valves Home    Pressure Control Valves 

Pressure Sustaining, Reducing, Relief  and Pilot Float Valves.

The unique patented pressure sustaining valve, pressure reducing valve, pressure relief valve and pilot float valve series cylindrical body design offers exceptionally high flow compact robust deign. With an exceptionally robust internal piston and improved U ring sealing that is common across the full range of pilot and pressure assisted range of pilot float valves, pilot pressure reducing valves, pilot pressure relief valves, pilot pressure sustaining valves and pilot solenoid control valves.
Each specific pilot control unit is mounted externally of the main cylindrical valve body and can be quickly installed or removed for easy, safe and transport, handling, installation and maintenance.
You can view, read technical information for all pressure control valves here:

Pressure Reducing Valve.

Pressure reducing valves PRV also known as pressure regulating valves are designed to reduce and maintain a constant outlet or downstream pressure regardless of upstream pressure changes, to protect process equipment from over pressure damage. Pressure reducing or regulating valves can be manually adjusted between their minimum and maximum pressure settings and the reduced downstream pressure will be displayed by the external pressure gauge.

Pressure Sustaining Valve.

Pressure sustaining valves BPV also known as back pressure valves are designed to maintain a set back pressure regardless of downstream flow demands, to protect upstream process equipment from under pressure or insufficient flow damage. Pressure sustaining or back pressure valves can be manually adjusted between their minimum and maximum pressure settings and the maintained back pressure will be displayed by the external pressure gauge.

Pressure Relief Valve.

Pressure relief valves also known as safety pressure release valves are designed to stay closed and when system pressure reaches close to the maximum pressure setting the pressure relief valve will quickly open to release the excess system pressure. When the system pressure reduces back down to safe levels the pressure relief valve will slowly close, maintaining correct pressure and avoiding back pressure pulse waves or water hammer effects caused by quick closing valves. Pressure relief or pressure safety release valves can be manually adjusted between their minimum and maximum pressure settings with the inlet or system pressure will be displayed by the external pressure gauge.

Pilot Float Valve.

Pilot float valves are designed as a mechanical water tank refilling control system, that does not require any electrical supply or additional control mechanism. The main valve body is connected to the main water line with its main outlet into the water tank. A pilot float ball valve is installed at the side of the water tank which will open and close a pilot valve according to the water tank water level. The pilot valve is connected by pipe to the main water inlet valve and it is the water pressure from the floating pilot valve that control the main inlet valve.

When the water level drops, the pilot valve floating ball drops, the pilot valve opens and releases the water back pressure to the main valve which will then open to refill the water tank.

When the water level rises and reaches the maximum water level setting, the pilot valve floating ball rises and the pilot valve closes generating water back pressure to the main valve causing this to close and stopping the water tank refilling further.

Water Control Valves - Float Control Valves  from Connexion Developments Ltd 0800 808 7799

Pilot float valve: BFF 
Port Sizes: DN50 to DN1000 flange PN16, ANSI150Lb or JIS10K
Material: cast iron, ductile iron, bronze, 304 stainless steel  or 316 stainless steel
Pressure: 0.3 to 16 Bar
Media: water,fluid,air,gas,light oil
Temperature: +80C max
Other options, sizes, materials, media and temperature available upon request

Pressure Relief Valve  from Connexion Developments Ltd 0800 808 7799

Pressure relief valve: BFL
Port Sizes: DN50 to DN1000 flange PN16, ANSI150Lb or JIS10K
Material: cast iron, ductile iron, bronze, 304 stainless steel  or 316 stainless steel
Pressure: 0.3 to 16 Bar
Media: water,fluid,air,gas,light oil
Temperature: +80C max
Other options, sizes, materials, media and temperature available upon request

Pressure Reducing Valves - REMT REMF Stainless Steel Micro Pressure Reducing Valves

Micro pressure reducing valve: REMT
Operation: direct acting
Sizes: DN15 to DN50mm and 1/2 BSP to 2" BSP.
Material: 316 stainless steel
Pressure: inlet 5 bar max adjustable range 0.02 to 0.2 Bar
Media: water,fluid,air,gas,light oil
Temperature: -15C to +80C Max
Other options, sizes, materials, media and temperature available upon request

Pressure Reducing Valves - RELT + RELF Stainless Steel Low Pressure Reducing Valve

Low pressure reducing valve: RELT + RELF
Operation: direct acting
Port Sizes: 1/2 to 2" BSP or NPT or DN15 to DN150 flange PN16, ANSI150Lb
Material: 316 stainless steel
Pressure: inlet 10 Bar max, adjustable range 0.2 to 1.5 Bar
Media: water,fluid,air,gas,light oil
Temperature: -15C to +80C max
Other options, sizes, materials, media and temperature available upon request

Pressure Reducing valves - Direct Acting 316 stainless pressure reducing valve  from Connexion Developments Ltd 0800 808 7799

Pressure reducing valve: RET
Operation: direct acting
Sizes 1/2 BSP to 2" BSP or NPT thread
Material: 316 stainless steel
Pressure: inlet 25 Bar max, adjustable range 1 to 6 Bar, 4 to 10 Bar or 8 to 13 Bar
Media: water,fluid,air,gas,light oil
Temperature: -15C to +80C
Other options, sizes, materials, media and temperature available upon request

Pressure Reducing Valves - Connexion REF series Pressure Reducing Valve

Pressure reducing valve: REF
Operation: direct acting
Sizes: DN50 to DN150 flange PN16, ANSI150Lb or JIS10K
Material: 316 stainless steel
Pressure: Inlet 25 Bar max adjustable range 1 to 6 Bar, 4 to 10 Bar or 8 to 13 Bar
Media: water,fluid,air,gas,light oil
Temperature: -15C to +80C
Other options, sizes, materials, media and temperature available upon request

Pressure Reducing Valve  from Connexion Developments Ltd 0800 808 7799

Pressure reducing valve: BFR
Operation: pilot pressure assisted
Sizes: DN50 to DN1000 flange PN16, ANSI150Lb or JIS10K
Material: cast iron, ductile iron, bronze, 304 stainless steel  or 316 stainless steel
Pressure: inlet 16 Bar max, adjustable range 0.7 to 7 Bar or 4 to 12 Bar
Media: water,fluid,air,gas,light oil
Temperature: -15C to +80C Max
Other options, sizes, materials, media and temperature available upon request

Pressure Sustaining Valves - Direct acting 316 stainless steel pressure sustaining and back pressure valves from Connexion Developments Ltd 0800 808 7799

Pressure sustaining valve: RFT
Operation: direct acting
Sizes: 1/2 BSP to 2" BSP or NPT thread
Material: 316 stainless steel
Pressure: inlet 25 Bar max, adjustable range 1 to 5 Bar, 4 to 10 Bar or 8 to 13 Bar
Media: water,fluid,air,gas,light oil
Temperature: -15C to +80C
Other options, sizes, materials, media and temperature available upon request

Pressure Sustaining Valves - Connexion RFF series Pressure Sustaining Valve

Pressure sustaining valve: RFF
Operation: direct acting
Sizes: DN15 to DN150 flange PN16, ANSI150Lb or JIS10K.
Material: 316 stainless steel
Pressure: 25 Bar max, adjustable range 1 to 5 Bar, 4 to 10 Bar or 8 to 13 Bar
Media: water,fluid,air,gas,light oil
Temperature: -15C to +80C max
Other options, sizes, materials, media and temperature available upon request

Pressure Sustaining Valve  from Connexion Developments Ltd 0800 808 7799

Pressure sustaining valve: BFS
Operation: pilot pressure assist
Sizes: DN50 to DN1000 flange PN16, ANSi150Lb or JIS10K
Body material: cast iron, ductile iron, bronze, 304 stainless steel  or 316 stainless steel
Pressure: 16 Bar max, adjustable range 0.2 to 4 Bar or 3 to 10 Bar.
Media: water,fluid,air,gas,light oil
Temperature: -15C to +80C max
Other options, sizes, materials, media and temperature available upon request
Solenoid valve stainless steel flanged with manual over ride pilot piston control
Flanged solenoid valve series: BFE
Operation: pilot pressure assist
Sizes: DN50 to DN1000 flange PN16, ANSI150Lb or JIS10K
Material: cast iron, ductile iron, bronze, 304 stainless steel  or 316 stainless steel
Pressure: 0.3 to 16 Bar Max
Media: water,fluid,air,gas,steam,light oil
Temperature: -15C to +180C
Voltage: 12 volt, 24 volt, 48 volt, 110 volt or  230 volt 
Optional ATEX EEx m II T4, EEx d IIC T6
Other options, sizes, materials, media and temperature available upon request

Connexion ALF L Series Hammer Arrestor

Water hammer arrestor series: ALF 
Sizes: DN50 to DN200
Material: ductile iron or stainless steel 304 or 316
Pressure: 20 Bar max
Media: water,fluid,liquid,light oil
Temperature: -15C to +80C
Connexion AIT Series Inline Thread Hammer Arrestors 01454 334990Connexion AIF Inline Series Flange Hammer Arrestor 01454 334990
Water hammer arrestor series: AIT + AIF
Sizes: 1/2 BSP to 4" BSP and DN80 to DN300 flange. 
Material: ductile iron or stainless steel AISI304 or AISI316
Pressures: 20 Bar max
Media: water,fluid,liquid,light oil
Temperature: -15C to +80C
Other options, sizes, materials, media and temperature available upon request

Connexion AXT Series L Water Hammer Arrestor 01454 334990

Miniature water hammer arrestor: AXT

Sizes: 1/2 BSP to 3/4" BSPM

Material: brass nickel plated

Pressures: 12 Bar max

Media: water,fluid,liquid,light oil

Temperature: -15C to +110C


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