Does the female portion of this item have FINE treads and the male portion to hook the hose to should be normal hose threads ?

Both are standard garden hose threads. (MHT Male hose thread)(FHT Female hose thread)

Can I use this for laundry tubs?

When the water pressure is shut off the excess water in the hose which would normally flow back into the hose instead comes out the small holes around the edge so I would not recommend using this anywhere you would want to stay dry.

I am looking for fine threads on the house side of the vacuum breaker and the course threads on the hose side. Does this one have that configuration?

Check out: SpigotMaster ~SM01 Vacuum Breaker Adapter~ Converts an Arrowhead PK1390 Anti-Siphon Valve Into a Straight Through Connection https://www.amazon.com/SpigotMaster-Adapter-Arrowhead-Anti-Siphon-Connection/dp/B07BD4H8RP/ref=cm_cr_arp_d_product_top?ie=UTF8

Does it include rubber washer?

mine shipped with a rubber washer

Mueller B And K 108 904rp Backflow Preventer Vacuum Breaker

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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€ 54.11

Duties & taxes included

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Sold byAmazon GreeceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💧 Secure your water, secure your peace of mind.

BUILT TO LAST - Includes break-a-way lock screw for vandal-resistant, secure setups.
VERSATILE FIT - Compatible with any 3/4'' hose thread outlet for seamless installation.
SMART DRAIN DESIGN - Manual drain release prevents freezing damage after hose removal.
CERTIFIED RELIABILITY - I.A.P.M.O. and A.S.S.E. approved for trusted performance.
ULTIMATE WATER SAFETY - Stops dangerous back siphonage to protect your potable water supply.

The Mueller/B & K 108-904RP Backflow Preventer-Vacuum Breaker is a compact, durable device designed to prevent back siphonage and contamination in potable water systems. Ideal for nonfreezing indoor or outdoor use, it fits any 3/4'' hose thread outlet and features a vandal-resistant lock screw and manual drain release. Certified by I.A.P.M.O. and A.S.S.E., it ensures reliable protection and peace of mind for your water connections.

Specifications

ASIN	B000DZHA7S
Department	department
Generic Name	Backflow Preventer-Vacuum Breaker
Included Components	1
Item Dimensions LxWxH	10.2 x 7.6 x 7.6 Centimeters
Item Weight	4.54 g
Item model number	FBA_108-904RP
Manufacturer	Mueller
Net Quantity	1.0 Count
Product Dimensions	10.16 x 7.62 x 7.62 cm; 4.54 g

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€ 54.11

Duties & taxes included

In stock

Sold byAmazon GreeceDelivered 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 Greece.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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