Psi Gauge
#1
Posted 29 August 2007 - 09:03 PM
#2
Posted 29 August 2007 - 09:07 PM
#3
Posted 29 August 2007 - 09:07 PM
-Dr. Suess
#5
Posted 29 August 2007 - 09:20 PM
Not the point. 1/2" CPVC pipe, no matter the pressure rating, is not going to hold such a large volume of air that you could possibly hope to do anything with it.Well the CPVC has a pressure rating of 400 PSI. Also this is an attempt to be like a DCAP or whatever it was that CS made.
Founder of the Shadow Militia.
Founder of Nightshade Laboratories and The Nightshade Armament Corporation.
#7 Guest_DarkInfection_*
Posted 29 August 2007 - 09:24 PM
What isn't rated for 400psi, is most check valves, and the joints made between sections of piping. If you even try to get the pressure up above 200psi, I'm guessing that the check-valve will blow, or the end cap on the tank will shoot of violently. It's just not safe to raise the pressure to the maximum.
#8
Posted 29 August 2007 - 09:27 PM
Also, 1/2'' PVC has like a 1200 PSI rating, but is not safe over 100 PSI.Not the point. 1/2" CPVC pipe, no matter the pressure rating, is not going to hold such a large volume of air that you could possibly hope to do anything with it.Well the CPVC has a pressure rating of 400 PSI. Also this is an attempt to be like a DCAP or whatever it was that CS made.
This guy can see the future!
hasbro in a nerf war!!!!! dude the will cancel it and confinscate are guns
#9
Posted 29 August 2007 - 09:37 PM
The cheapest pressure gauge I've used is $6 and is available through mcmaster (part# 40565K51) and is available in pressure ranges up to 60, 100, 160, 200, and 300. It's 1/8 NPT threaded so you either need a threaded adapter to screw it into, or you have to drill and thread a hole using a tap.
When I made the DCHAP-1 I used 1-1/4" SCH40 PVC as the blast chamber. You need atleast 1" pipe to make a sensibly sized tank for a single shot.
Edited by CaptainSlug, 29 August 2007 - 09:38 PM.
#10
Posted 29 August 2007 - 09:58 PM
#11
Posted 29 August 2007 - 11:49 PM
Here's a list of parts
<- Brass 1/8 NPT Threaded Tee or Cross with Pressure Gauge and pump input ->
<- Brass 1/8 NPT hex nipple ->
48335K207 - HI-Strength White Nylon Threaded Pipe Fitting 3/4" Male X 1/8" Female, Reducing Hex Bushing = In stock at $1.30 Each
4880K203 - Std-Wall (Schedule 40) White PVC Pipe Fitting 1" Pipe End Male X 3/4" NPT Female, Hex Bushing = In stock at $0.82 Each
Bushings have the same OD as the pipe so to glue them to the end of the pipe you have to use couplers.
4880K73 - Std-Wall (Schedule 40) White PVC Pipe Fitting 1" Pipe Size, Coupling, 2-3/32" Length = In stock at $0.48 Each
<- Length of 1" SCH40 PVC Pipe ->
4880K73 - Std-Wall (Schedule 40) White PVC Pipe Fitting 1" Pipe Size, Coupling, 2-3/32" Length = In stock at $0.48 Each
4880K314 - Std-Wall (Schedule 40) White PVC Pipe Fitting 1" X 1/2" Sz, Pipe End Male X Socket Fem, Hex Bushing = In stock at $0.74 Each
<- Very short Length of 1/2" SCH40 PVC Pipe ->
4876K51 - Economy PVC Ball Valve 1/2" Socket Connection, White Body = In stock at $4.98 Each
<- Length of 1/2" SCH80 CPVC Pipe for the barrel ->
Edited by CaptainSlug, 29 August 2007 - 11:50 PM.
#12
Posted 30 August 2007 - 10:55 AM
Use standard SCH 40 PVC
Use high pressure SCH 40 PVC (a darker grey than regular SCH 40)
Buy a cheap 2" dial pressure gauge, like CS said. If you want a really high pressure, such as 30-350 psi, I migh be able to get you a high pressure compressed gas regulator (used on HVAC systems). It has one pressure gauge, but you'd want 2, one for pressure input and pressure output.
#13
Posted 30 August 2007 - 03:46 PM
It may sound simple, but it works. I may be misunderstanding the purpose a bit, but as long as you are going to fill it via a tire valve, I see no problems arising.
#15
Posted 09 September 2007 - 08:28 AM
#16
Posted 09 September 2007 - 11:34 AM
Is it thin wall, or SCH40, or high pressure SCH 40É I`m going to assume regular SCH 40, so 100 psi should be your upper limit. I think CaptainSlug said they could hold about 120 psi max.i have a question now. if i have 1.5 inch pvc then how much air should i put in? do i only put in up to 100 psi?
#17
Posted 09 September 2007 - 01:38 PM
#18
Posted 09 September 2007 - 03:39 PM
Correct.do i only put in up to 100 psi?
#19
Posted 09 September 2007 - 07:14 PM
how long do you think an airtank should be if its 1.5 inch pvc to get off 10 shots? about 1 foot?Correct.do i only put in up to 100 psi?
#20
Posted 09 September 2007 - 08:51 PM
Founder of the Shadow Militia.
Founder of Nightshade Laboratories and The Nightshade Armament Corporation.
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