Is this for 1 1/2" pipe or is it for a quantity of 1 for a 1/2" pipe?

1-1/2 inch IPS, not a quantity of one for 1/2 inch.

Can this be used with hose thread?

These are pipe thread which is slightly different from hose thread. However there are hose adapters out there to make the transition

Does the swing valve have a spring too or just free floating? Needed for lake pump but would be horizontal, so would it still work?

The swing check valve does have a spring, but should not be an issue for the application you have described.

This says it is threaded as fip...is this compatible with male npt threads?

Yes, FIP and NPT are interchangeable.

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🚰 Elevate your water system with brass-backed reliability!

HEALTH FIRST DESIGN - Lead-free construction guarantees safe use in all potable water applications
EFFORTLESS INSTALLATION - 3/4-inch IPS fittings ensure quick, secure setup without hassle
PREMIUM BRASS DURABILITY - Built to last with high-quality corrosion-resistant brass
VERSATILE PRESSURE HANDLING - Operates seamlessly between 125 PSI and 200 WOG for diverse systems
RELIABLE BACKFLOW PROTECTION - Prevents contamination with precision swing check mechanism

The Eastman 3/4-inch IPS brass swing check valve (model 20423LF) offers robust backflow prevention with a durable, lead-free brass body. Designed for easy installation and reliable operation up to 125 PSI, it safeguards potable water systems from contamination and damage, making it ideal for wells, boilers, and drinking water setups.

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Brand	Eastman
Model Number	20423LF
Product Dimensions	6.05 x 6.05 x 5.56 cm; 244.94 g
Color	ブラス
Name List for Name Plates	3/4インチ FIP x 3/4インチ FIP。
Material	真鍮
Included Components	バルブ
Are Batteries Included	No
Item Weight	245 g

Eastman 真鍮スイングチェックバルブ、3/4インチIPS、真鍮配管継手、20423LF

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