How do you install it to get it watertight? Looked for youtube videos - no luck!

The fitting itself is watertight. If its not, its defective. Once you push the pipe into this fitting you will feel it "pop" or "slip" into the seat where it becomes watertight. If its sitting right, you should not be able to pull this pipe out, nor should there be any leakage from it.

Can you control the speed of water flow through this valve?

I don't see why not. For my use, it's only open or closed. You would actually be controlling the amount of flow not the speed.

Does this value have or require a california proposition 65 warning for california residents? thanks!

Prop65 applies to any material, the warning is required even if a trace amount of over 1000 substances from the Prop65 list maybe present. We have the warning on our bags to comply with the requirement of the Prop65 regulation for “clear and reasonable” warning.

Does this work with 1/4 in drip irrigation tubing?

I used it with a 1/4" pex line for a fridge filter not totally sure about the irrigation line, you can try it out for a test before installing to be sure. A good sharp tubing cutter will help for a better seal and fit. Good Luck

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John Guest Speedfit 3/8 Inch OD Straight Shut Off Valve, Push to Connect Plastic Plumbing Fitting, PPSV041212WP

Product ID: 280022204

Details

Brand
John Guest
Colour
White
Item dimensions L x W x H
8 x 4 x 15
Material
polyprolylene
Size
3/8 in. Tube

💧Food-grade EPDM O-rings

🔧Tool-free twist-and-lock install

⚙️150 PSI max pressure

¥6419

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Description

🚰 Twist, Connect, and Never Look Back – Plumbing Made Effortless!

BUILT TO LAST - Polypropylene body with NSF-certified chemical resistance ensures durability and safety.
POTABLE WATER SAFE - Food-grade EPDM seals make it perfect for drinking water systems and hydronic heating.
LEAK FREE CONFIDENCE - Approved for behind-the-wall use, guaranteeing a permanent, drip-proof connection.
EFFORTLESS INSTALLATION - Push, twist, and lock—no tools, glue, or solder needed for a flawless fit.
PRESSURE READY PERFORMANCE - Handles up to 150 PSI at 70°F, built to withstand demanding plumbing needs.

The John Guest Speedfit 3/8 Inch OD Straight Shut Off Valve is a high-quality polypropylene plumbing fitting featuring food-grade EPDM O-rings. It offers a quick, tool-free twist-and-lock installation, rated for 150 PSI at 70°F, and is NSF 61 and 51 certified for safe use with potable water. Designed for permanent, leak-free behind-the-wall applications, it combines durability, safety, and convenience for professional-grade plumbing solutions.

Specifications

ASIN	B003YKF2F6
ASIN	B003YKF2F6
Best Sellers Rank	#106,492 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #784 in Industrial Pipe Fittings
Brand Name	John Guest
Color	White
Connector Type	3/8OD x 3/8OD STRGHT VLV
Customer Reviews	4.7 4.7 out of 5 stars (442)
Customer reviews	4.7 4.7 out of 5 stars (442)
Date First Available	5 September 2012
Exterior Finish	Plastic
Global Trade Identification Number	00665626120381
Included Components	Valve
Is Discontinued By Manufacturer	No
Item Dimensions	8 x 4 x 15 centimeters
Item Type Name	Plastic Push Shut Off Valve
Item Weight	29 Grams
Item model number	PPSV041212WP
Manufacturer	Reliance Worldwide Corporation
Manufacturer	Reliance Worldwide Corporation
Manufacturer Part Number	PPSV041212WP
Material Type	polyprolylene
Model Number	PPSV041212WP
Number of Pieces	1
Product Dimensions	8 x 4 x 15 cm; 29 g
Size	3/8 in. Tube OD
Thread Size	0.375 inch
Thread Type	NPTF
UPC	665626120381
Unit Count	1 Count

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¥6419

Duties & taxes included

In stock

Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Japan.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

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2 weeks ago

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