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#1
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Still looking, WTB - purge valves for dry bags
Thanks for the tips for not create "negative pressure" in drybags,
assuming that I could find purge valves to purge the excess air from a dry bag. I still would like to incorporate purge valves in my homemade drybags. End |
#2
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Still looking, WTB - purge valves for dry bags
"Scott Bemis" wrote in message om... Thanks for the tips for not create "negative pressure" in drybags, assuming that I could find purge valves to purge the excess air from a dry bag. I still would like to incorporate purge valves in my homemade drybags. End Try a manufacturer of scuba diving drysuit valves, and use an automatic cuff-dump valve. The Apeks ones are good, small and reliable, and easy to install. Here is a source in theUK http://www.divebooty.co.uk/equipment...ls.asp?pid=276 but for USA I'd suggest trying rec.scuba.equipment and I'm sure they'll be able to help. Cheers David M |
#3
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Thanks, drysuit cuff valves as purge valves for dry bags
This is an excellent suggestion. I will be getting these apek valves
and installing them in homemade dry bags. As I kayak and do not scuba dive, I was not aware of these type of valves. My drysuit for kayaking does not have any valves, which is normal for kayak drysuits. I am grateful for this suggestion. Try a manufacturer of scuba diving drysuit valves, and use an automatic cuff-dump valve. The Apeks ones are good, small and reliable, and easy to install. Here is a source in theUK http://www.divebooty.co.uk/equipment...ls.asp?pid=276 but for USA I'd suggest trying rec.scuba.equipment and I'm sure they'll be able to help. Cheers David M |
#4
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Thanks, drysuit cuff valves as purge valves for dry bags
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#5
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Thanks, drysuit cuff valves as purge valves for dry bags
"Michael Daly" wrote in message ble.rogers.com... On 14-Oct-2003, (Scott Bemis) wrote: This is an excellent suggestion. I will be getting these apek valves and installing them in homemade dry bags. Let us know what you think when you get them, please. I have some valves like those used on flotation bags and they are almost impossible to get. I received them as a result of a bulk purchase done on the QajaqUSA web forum. The manufacturer couldn't tell where to get them retail and only sold wholesale in lots of 1000. Big problem for us DIY types. Having thought a bit more about this now, I think that on OPV/dump valve (OPV=over pressure valve) for a scuba BCD (inflatable bouyancy vest) would do this job even better. This is a spring loaded valve with a little knob on a cord that you pull to open it. This way you only dump the amount of air that you want to, rather than the valve deciding how much air to dump. The other advantages are that they will be available from any dive shop, as they are used by every diver on their BCD. If you don't know what to ask for, ask for a "butt dump valve" and they'll know what it is. Probably $10 will get you one. HTH David M |
#6
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Thanks, drysuit cuff valves as purge valves for dry bags
"Scott Bemis" wrote in message om... My drysuit for kayaking does not have any valves, which is normal for kayak drysuits. Yikes, I can't imagine kayaking where one needs a drysuit... Over here (Western Australia) the water temp never gets below 14C or so Cheers David M |
#7
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NRS Float Bag Valve http://www.nrscatalog.com/product.asp?pfid=3875
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I have some valves like those used on flotation bags and they are almost impossible to get. I received them as a result of a bulk purchase done on the QajaqUSA web forum. The manufacturer couldn't tell where to get them retail and only sold wholesale in lots of 1000. Big problem for us DIY types. Mike I do know if this is the same valve you use or not At web url http://www.nrscatalog.com/product.asp?pfid=3875 Northwest River Supplies sells NRS Float Bag Valve This may also be an option. I would just like to avoid an exhaust tube as I would like to use these drybags in backpacking, sea kayaking, and bicycle touring Scott Bemis |
#9
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: drysuit dump cuff valves, purge vavle - dry bag & NRS Float Bag Valve http://www.nrscatalog.com/product.asp?pfid=3875
Thanks for your experience with valves used in drybags for sea
kayaking (although I will also use these homemade, small drybags for backpacking, and bicycle touring, too). The valve at NRS Float Bag Valve http://www.nrscatalog.com/product.asp?pfid=3875 is most likely the lowest cost, although I doubt I could get your price of 8 for $1.00 Those drysuit valves are kinda big and likely a lot more than the $0.30 for the NRS valve. A quick google scan on the drysuit valves yields prices between $50 and $100!! And yes, the drysuit dump cuff valves are relatively expensive. The Apeks Drysuit Cuff dump is as of October 16, 2003 11.75 GBP (United Kingdom Pounds) or about US $20, shipping not included as listed at http://www.divebooty.co.uk/equipment...ls.asp?pid=276, Description: Totally free from maintenance and requires no adjustment. Designed to fit in the suit cuff and allows venting air to escape from the suit by simply raising the arm for others who may search for this. Merchant: Simply Scuba Manufacturer: Apeks Category: Drysuit Accessories Model: Drysuit Cuff dump Price: £11.75 GBP Convert Shipping: See Site Other valves that I am considering (as I am trying to avoid using tubes) although I like your ideal of I'm using them with short tubes and am planning to use a little flap to tuck them in. For a tapered drybag, I'm just going to put it on the end sticking out minimally and may use it. I have these type of valves on other floatation bags. I found at the following web pages. These valves may have the issue you mentioned about releasing when packed into tight spots. I would need to modify the string like release if I were to use these valves. There may be another type of valve, but I can't think of one. Those BTW, the BCD valves release relatively easily. If you stuff the drybag into a tight spot and the cord is slightly tugged in the process, it will stay open. And I strongly prefer to avoid pulling out a damp or wet sleeping bag along with damp or wet clothing out of a drybag with a OPV or purge valve that released. At www.gmcscuba.com (Global MFG. Corpo, 1829 S. 68 Street, West Allis, Wisconsin 53214, U.S.A. in my part of the world, makes a purge valve for lift bags. It is listed on page 7 on their online catalog, in the communication products and support gear section, item number 57030 Purge valve Purge Valve for Lift Bags. These are sold at local scuba shops in the Minneapolis, Minnesota, U.S.A. area. I will look at these valves. At www.underwaterfloation.com/drybags.htm, there are Prolift over pressure valves used in liftbags. Prolift Over Pressure Valves are available in 2 styles. The two piece black screw type is used on our smaller liftbags and requires no special tooling for installation. The large white PVC Valve is used on larger liftbags and requires a 1 1/2" flange to be installed. OPVBLK - Over Pressure Valve Black $9.00 OPVWHT - Over Pressure Valve White $12.00 And liftbags could make the world's largest sponsons, making a kayak unsinkable (just kidding . I assume these purge and over pressure valves are similar to BCD valves, although I do not have a BCD (just a simple kayaker, no scuba experience). I have spent far more time looking at valves than I initially planned (and looking at scuba related gear in the process). Scott |
#10
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drysuit dump cuff valves, purge vavle - dry bag & NRS Float Bag Valve http://www.nrscatalog.com/product.asp?pfid=3875
"Scott Bemis" wrote in message om... At www.underwaterfloation.com/drybags.htm, there are Prolift over pressure valves used in liftbags. Prolift Over Pressure Valves are available in 2 styles. The two piece black screw type is used on our smaller liftbags and requires no special tooling for installation. Scott, FWIW the black valve looks like a standard BCD OPV valve. These are also used in small (50kg) personal lift bags used by recreational divers. Cheers David M |
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