Description
Hansen 20mm (3/4″) Stainless Steel Screws / HMFSCREW
This is a spare or replacement screws only for Hansen Maxflo and Mini Fastflo Valves use.
SPECIFICATIONS
- PRODUCT CODE: HMFSCREW
- CODE MEANING: Hansen Max Flo Screws
- SIZE: 20mm (3/4″)
- MATERIAL: Stainless Steel
- SUITS: MAXFLO AND MINI FASTFLO VALVES
- Maxflo Valve is AS/NZS 4020 Approved Product, see certificate at Hansen Australia Website.
SUITABLE WITH THE FOLLOWING MAXFLO VALVES AND MINI FASTFLO ADAPTORS (Available as seperate purchase)
- HMFDV2520 Maxflo 25/20 Trough / Tank Valve
- HMFDV2520L Maxflo 25/20 Long Trough / Tank Valve
- HMFDV3225L Maxflo 32/25 Long Trough / Tank Valve
- HMFFSV15LS Mini Fastflo Valve with 15mm Long Tail Adaptor
- HMFFSV20LS Mini Fastflo Valve with 20mm Long Tail Adaptor
- HMFFSV25LS Mini Fastflo Valve with 25mm Long Tail Adaptor
MAXFLO INSTALLATION GUIDE (See installation guide in image gallery)
- TROUGH INSTALLATION
- Flush lines into water troughs before installing Max˙Flo Valve into new system.
- Isolate water trough to replace valve in existing scheme.
- Put thread tape on adaptor side that does not have O-ring and start adaptor into trough inlet.
- MAXFLO TOP ENTRY (See image gallery for visual guide)
- TOP ENTRY TROUGH
- Thread Max˙Flo Valve onto adaptor and tighten.
- Determine the on/off point and water level required.
- Use supplied Adjustable Extension Arm when a larger air gap is required.
- Adjust the float and arms to suit required angle.
- TROUGH INSTALLATION
- Thread Max˙Flo Valve onto adaptor and tighten.
- Determine the on/off point and water level required.
- Use supplied Adjustable Extension Arm when a larger air gap is required.
- Adjust the float and arms to suit required angle.
WALL THICKNESS GUIDE
| LONG TAIL ADAPTOR | HMAL15 | HMAL20 | HMAL25 | HMAL32 | HMAL40 | HMAL50 |
| TANK WALL | 14mm | 22mm | 19mm | 24mm | 45mm | 39mm |
Hansen Long Tail Adaptors Maximum Wall Thickness for Tanks when screwed into a Hansen Female Bend
MAXFLO INSTALLATION DIAGRAMS (See full diagrams in image gallery)
- TROUGH INSTALLATION
- Flush lines into water troughs before installing Max˙Flo Valve into new system.
- Isolate water trough to replace valve in existing scheme.
- Put thread tape on adaptor side that does not have O-ring and start adaptor into trough inlet.
- MAXFLO BOTTOM OR SIDE ENTRY TROUGH (See image gallery for visual guide)
- Thread Max˙FloValve onto adaptor and tighten.
- Thread cord through the float, adjust cord to required on/off level then tie off.
TANK INSTALLATION
- Flush lines into water tank before installing Max˙Flo Valve into system.
- Put thread tape on adaptor side that does not have O-ring and start adaptor into tank inlet above or below water.
- Thread Max˙Flo Valve onto adaptor and tighten.
- If the Max˙Flo Valve is installed below water, thread cord through the float, adjust cord to required on/off level then tie off.
ASSEMBLY GUIDE: See image gallery for diaphragm valve assembly instructions.
HANSEN MAXFLO VALVES BROCHURE AND CHEAT SHEETS
- Refer to Hansen Australia Website.
HANSEN MAXFLO VALVES VIDEO GUIDES & COMMERCIALS
- Refer to Hansen Australia Website.
MAX FLO PARTS AND MATERIALS
- MAX FLO PARTS (Also, available as seperate purchase)
- HMFBODY 25mm Female BSPT Diaphragm Valve Body
- HMFDIA 25mm Diaphragm with Stainless Steel, Spring
- HMFCAP Valve Body Cap with Guide Pin
- HMFNUT Valve Body Cap Nut
- HMFARM Short Control Arm with Arm Seal
- HMFXARM Adjustable Extension Arm
- HMFSEAL Short Control Arm Seal
- HMFSCREW 2x 20mm Stainless Steel Screws
- HMFPIN25 25mm Stainless Steel Split Pin
- HFLOAT100HI 100mm Flanged Float HiViz
- HMFCORD 650mm Cord
- MAX FLO PARTS’ MATERIALS
- DIAPHRAGM VALVE BODY (HMFBODY): Glass Fibre Reinforced Nylon
- DIAPHRAGM (HMFDIA): Nitrile Rubber
- GUIDE BUSH (HMFCAP): Glass Fibre Reinforced Nylon
- SPRING (HMFDIA): Stainless Steel
- SPLIT PIN (HMFPIN25): Stainless Steel
- VALVE BODY CAP (HMFCAP): Acetal
- GUIDE PIN (HMFCAP): Stainless Steel
- VALVE BODY CAP NUT (HMFNUT): Glass Fibre Reinforced Nylon
- ARM SEAL (HMFSEAL): Thermoplastic Polyurethane Elastomer
- SHORT CONTROL ARM (HMFARM): Glass Fibre Reinforced Nylon
- SCREWS (HMFSCREW): Stainless Steel
- ADJUSTABLE EXTENSION ARM (HMFXARM): Glass Fibre Reinforced Nylon
- CORD (HMFCORD): Polyester
- ADAPTOR: Glass Fibre Reinforced Nylon
- ADAPTOR O-RING: EPDM (Ethylene Propylene)
- FLOAT: High Density Polyethylene
- THREAD INSERT: Glass Fibre Reinforced Nylon
- The Max Flo Diaphragm Valve is manufactured from Potable Water approved materials.
- ADAPTORS – BSPT (HMAL AND HMA 15-20-25-32-40-50)
- FLOAT (HFLOAT 115-140)
MINI FASTFLO INSTALLATION GUIDE (See visual guide in image gallery)
- TROUGH/TANK INSTALLATION
- Flush pipe lines into water tank or troughs before installing Mini Fast˙
Flo Valve into new
system. - Isolate the water going to the bowl, trough or tank to replace valve in an existing system.
- Thread O-Ring end of correct size Long Tail Adaptor into Mini Fast˙Flo Valve Body and
tighten firmly enough that the O-Ring creates a seal against the Mini Fast˙Flo Valve Body face. Do not over tighten.
- MINI FASTFLO TOP ENTRY BASIN/TROUGH/TANK
- TOP ENTRY TROUGH/TANK (See visual guide in image gallery)
- Place the rubber washer on the long tail adaptor with ribs facing out so that the sealing
surface is against the bowl/trough/tank wall when adaptor is put through inlet hole. - On the outside, place the Poly (hard) Washer on the Long Tail Adaptor with the ribs facing the
bowl/trough wall. Thread on Adaptor Nut and tighten firmly. Do not over tighten. - Screw the Mini Fast˙Flo Float onto the Arm and use the Ezy Clamp to move the float to
desired position for a water level that suits your requirements.
- Place the rubber washer on the long tail adaptor with ribs facing out so that the sealing
WALL THICKNESS GUIDE
| LONG TAIL ADAPTOR | HMAL15 | HMAL20 | HMAL25 | HMAL32 | HMAL40 | HMAL50 |
| TANK WALL | 14mm | 22mm | 19mm | 24mm | 45mm | 39mm |
Hansen Long Tail Adaptors Maximum Wall Thickness for Tanks when screwed into a Hansen Female Bend.
MINI FASTFLO ASSEMBLY GUIDE: (See full mini fastflo valve assembly chart in image gallery)
MINI FASTFLO PARTS AND MATERIALS
The Mini Fastflo Trough/Tank Valve is manufactured from Potable Water Approved Materials.
- MINI FASTFLO VALVE BODY: Acetal
- SLEEVE VALVE PLUNGER: Acetal
- MINI FASTFLO BODY CAP: Polypropylene
- SLEEVE VALVE PLUNGER SEAL: Polyurethane Elastomer
- MINI FASTFLO ARM: Glass Fibre Reinforced Acetal
- MINI FASTFLO CLAMP: Glass Fibre Reinforced Acetal
- SPLIT PIN: Stainless Steel
- SCREW: Stainless Steel
- MINI FASTFLO FLOAT: High Density Polyethylene
- ADAPTORS: Glass Fibre Reinforced Nylon
- ADAPTORS O-RING: EPDM (Ethylene Propylene)
FREQUENTLY ASKED QUESTIONS
- QUESTION: At present I get valve bounce in my troughs, will the Max-Flo valve stop this?
- ANSWER: Yes, valve bounce is created from high flows at high pressures, because our Hansen Max-Flo valve delivers higher flows than other valves it will effectively reduce line pressure which in return will reduce the incidences of this problem by also reducing water hammer.
- QUESTION: At present I have noticed some shuddering and noise in my pipelines when my pump starts and stops, will your valve stop this?
- ANSWER: Yes, this is called water hammer, we have designed the Hansen Max-Flo Valve to open and close slower than other valves effectively varying the flows at these times to minimise the chance of water hammer.
- QUESTION: Can I use the Hansen Max-Flo Valve as a top entry valve with an air gap?
- ANSWER: Yes, the Hansen Max-Flo Valve can be installed at the top, side or bottom entry as all components come with each valve.
- QUESTION: I have a header tank in my house that is very noisy while filling, will the Hansen Mini Fast-Flo valve be any quieter?
- ANSWER: The noise while the tank is filling is caused by the high velocity of the water from the valve outlet into the tank. The Mini Fastflo valve outlet doubles as a spigot so you can attached a length of hose to allow the flow to be placed onto the bottom of the tank eliminating this noise.
- QUESTION: I have found the rubber seats in the compact trough valves I am using don’t last very long, does the Hansen Mini Fast-Flo valve use the same rubber seat?
- ANSWER: No, the seat we use in Hansen Float Valves are urethane which is a very durable and hard material. The seal is also reversible if a foreign body should damage it.
- QUESTION: I have problems with having to constantly clean my valves as my water supply can get dirty at times, how will the Hansen Max-Flo valve handle these conditions?
- ANSWER: Our patent pending “Self Cleaning Pilot” will increase durability and suitability in dirty water situations.
- QUESTION: My troughs have both 20mm & 25mm threaded inlets, does your Hansen Max-Flo Valve come in both sizes?
- ANSWER: Yes, the Hansen Max-Flo Valve comes with the required components to install in 20mm or 25mm threaded inlets. This of course means you only need to buy one valve for all sized inlets.
- QUESTION: The pressure at my compact trough is quite high and the compact float valves I have used either don’t last very long or they don’t shut off properly. Will the Hansen Mini Fast-Flo valve work with high pressure.
- ANSWER: Yes, the Mino Fast-Flo Valve has the arm pivot point positioned to allow closing at pressures up to 12 bar (174psi).
- QUESTION: What pressure can I run my Hansen Max-Flo Valve at?
- ANSWER: The Hansen Max-Flo Valve will operate from 0.2 bar to 12 bar.
- QUESTION: What size tank inlet do I need to fit the Hansen Mini Fast-Flo Valve?
- ANSWER: All Hansen float valves carry a 25mm (1”) female thread on the valve inlet. This gives you a couple of benefits. The valve will fit inlets from 15mm to 50mm when using our range of adaptors. The additional material used at the inlet to form the female thread strengthens the valve at an area that has been identified as a weak point in other brands of valves.
- QUESTION: Will the Hansen Mini Fast-Flo valve work in my calf shed bowl troughs?
- ANSWER: Yes, the Mini Fast-Flo was designed as a compact valve for use in small bowls, compact troughs, feeders & header tanks or any situation where the valve space is confined.
- QUESTION: Will the higher flow cost me more to run my pump?
- ANSWER: No, because the Hansen Super-Flo valve is more efficient than what you are used to. The reduced operating pressure required will equate to higher flows at lower pressures at your pump which in turn will reduce pumping time and cost.
