Joined in 2023 
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The little problem, which is more annoying than a problem is the sound from the pump. When any tap is used we get "water hammering"...this goes on for maybe 5/6 secs when the tap is closed. Don't know what your capped stub-hose is for. It's possible that a semi-standardised water-system is used by Challenger and the connection with the hose that leads nowhere on your Genesis 34+ would, on a Challeger motorhome model with an alternative interior layout to yours, have a hose leading to a differently-located water outlet. Alternatively, it might be intended for an optional (cold-water?) outside shower-point. Shurflow accumulator tanks reduce cycling pulsation and pressure spikes, increase the life of your pump and even save battery power. NSF certified. Nylon Tank. Dimensions: 230 x 100mm. Maximum PSI: 125 The accumulator contributes to longer pump life, less noise, less amperage draw, and reduced water pulsation. The most efficient use of the accumulator occurs with the pre-charge set at the same pressure as the pump’s pressure switch “turn on” setting. The pre-charge must be set in a “static” condition (pump off and at least one water fixture opened). An ideal freshwater accessory to use with your pressure switch controlled pump for use on caravans and motorhomes.
Our collections by our couriers are happening as usual. As it stands, delivery times are not being affected too much. Please be aware though that Royal Mail and other couriers are sometimes prioritising essential items so please bear with us if your delivery takes slightly longer than expected. When I first see this valve I must admit I thought it was to drain any air in the system out. ..help. Yes, you can continue to return items as normal as long as you follow the government guidelines about leaving your house. For the latest information and advice on COVID-19, please refer to the latest updates by the UK Government.I had a look at the pump t'other week and I noticed this "schrader type valve"....so does the system need a foot pump to take it to 20psi??? Fitting an expansion tank is simple enough in principle, but can be a real challenge if space is tight. All the expansion tanks I know of seem to require fitting in an upright position. There may also be a need to adapt the tank's water-connections if they don't match the type of water system used on the leisure vehicle. For example, Fiamma's A20 expansion tank is designed to connect to a traditional system using flexible water hoses and Jubilee-clips. Adaptation would be required to connect an A20 to a system using semi-rigid water pipework and push-fit connectors. Can be mounted in any position. However, for complete sanitizing/winterizing, the recommended mounting position is with pre-charge valve stem up. Do not freeze or mount near a high heat source. I had forgotten about Whale's 'surge damper' that does have a single connection to the water pipework. It is designed to link to Whale semi-rigid pipework using a 15mm push-fit connector. For other types of pipework, adapters would be necessary. Because of its small size and the way it works it won't be as effective as 'accumulator' expansion tanks like Fiamma's A20. See:
The A20 is designed for universal use and is therefore an ideal addition to our Shurflo Trail King water pumps, previous models and all other types of pressure switch pumps. The Fiamma A20 Universal Expansion Tank is small and compact, not much bigger than a 750ml bottle of water. Extend the life of your pump and cut water consumption with theFiamma A20 universal expansion tank It seems to be generally agreed that your accumulator needs to be pre-charged to a few psi below the cut-in pressure of the pump for things to work in an optimal way. (E.g. pump with cut-out at 30 psi, and cut-in at 20 psi - set accumulator pre-charge to say 17 psi) I fitted the Whale product to my previous Herald motorhome in an attempt to cure spitting at the water-taps. However, I can't comment on its effectiveness as the problem turned out to be due to an air leak where the water pipework connected to the fresh-water tank. Shurflow pre-pressurized accumulator tanks reduce cycling pulsation and pressure spikes, increase the life of your pump and even save battery power. NSF certified. Precharge to 20 psi. 24 oz. Nylon Tank. Dimensions: 230 x 100mm. Maximum PSI: 125 We've had our Swift Challenger for a couple of months now. ..we've had a few weekend away getting to know her. Now we're off this Thursday for two weeks. ..first in Yorkshire, 2nd week in Scotland and I would like to find an answer to a little problem.Use a standard tire air pump and pressure gauge. The pre-charge valve stem cap MUST be tight to prevent air leakage. SHURflo’s Accumulator Tank smoothes water faucet pulsations and reduces pump cycling to keep water line pressure up and pump motors cool. The SHURflo® accumulator tank reduces plumbing system noise, increases the life of your pump and saves battery power.
The pulsating water flow generated by pressure switched water pumps is replaced by a constant flow of water when you install a Fiamma A20 Universal Expansion Tank. Your water pump draws water from your water tank then pumps that water through the expansion tank. The internal pressurised diaphragm in the expansion tank eliminates any pulsating water flow and ensures a smooth, continuous flow instead, in the quantity required for showering or running a tap. Universal use The Shurflo Accumulator Tank is a bladder type pressure storage vessel and pulsation-dampening device designed to hold water under pressure. The accumulator tank provides additional water storage to assist the pump in meeting the total demands of the system. It extends pressure switch-controlled pump life by reducing pump on-off pulsation. The accumulator is designed to reduce cycling pulsation and pressure spikes, increase the life of your pump and even save battery power. The Shurflo accumulator easily handles pressure requirements from 20 PSI to 125 PSI.Models with 1/2-14 ports: Insert the rubber washers in each port. Threaded fittings (plastic/nylon only) should be torqued approximately 1/2 to 1 turn after hand-tightened. Never exceed 6 ft/lbs [88 Nm] of torque on the ports. Plumb the system using high pressure (2x pump rating), braided, flexible tubing to minimize vibration/noise. There are quite a few 'surge damping' expansion tanks on the market. These vary in size, complexity and cost, but they all have two water connections and they are all fitted "in line".
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