What’s the max flow rate through this thing? My combi system has cold leak of 0.5bar/8hr. This valve doesn’t seem to raise the pressure at all.

I have no problem with this valve it appears to have a good flow and did not need setting from memory the grey knob is a shut off, check the direction, you would have have two isolation valves in the system before fitting check them. The quarter turn plastic lever ones I have seen them strip and stay shut. Could be the strainer basket is blocked.

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

Help Track order

Account Cart

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

Help Track order

Account Cart

Caleffi 553140 Automatic Filling Unit 1/2'' with Manual Cock, Strainer, Check Valve.and Pressure Gauge

Caleffi 553140 Automatic Filling Unit 1/2'' with Manual Cock, Strainer, Check Valve.and Pressure Gauge

Product ID: 103795985

Details

Brand
Caleffi
Colour
Gold
Connector type
Threaded (NPT)
Exterior finish
Gold
Item weight
0.5 Kilograms
Material
Metal (such as

📊Built-in pressure gauge

⚙️Auto-fill precision

🛡️Calcification-resistant durability

$139.28

Duties & taxes included

In stock

Sold byAmazon USADelivered 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 USA.

Secure transaction

Description

⚙️ Stay ahead with precision plumbing power!

ALL IN ONE COMPACT DESIGN - Includes manual cock, strainer, and check valve in a sleek 1/2'' gold-finished unit.
HEAVY DUTY OPERATING RANGE - Handles up to 16 bar pressure and 70°C temperature—built for demanding environments.
SEAMLESS AUTO FILL CONTROL - Effortlessly maintain optimal water levels with precision automatic filling.
REAL TIME PRESSURE MONITORING - Integrated pressure gauge keeps you informed from 0.3 to 4 bar for ultimate system safety.
ROBUST CALCIFICATION RESISTANCE - Engineered internal preset prevents scale buildup, ensuring long-lasting performance.

The Caleffi 553140 Automatic Filling Unit is a compact, gold-finished 1/2'' plumbing solution featuring an automatic filling mechanism, manual cock, strainer, check valve, and integrated pressure gauge. Designed for durability with calcification-resistant internal presets, it operates safely up to 16 bar pressure and 70°C temperature, making it ideal for professional-grade hydraulic systems.

Specifications

ASIN	B009L4HU72
Best Sellers Rank	66,085 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 17 in Hydraulic Gauges
Brand	Caleffi
Colour	Gold
Connector Type	Threaded Fitting (NPT)
Customer Reviews	4.7 4.7 out of 5 stars (34)
Exterior Finish	Gold
Item Weight	0.5 Kilograms
Manufacturer	CALEFFI
Material	Metal (such as brass or bronze)
Model Number	553140
Number of Packs	1
Number of Pieces	1
Part Number	553140
Set Name	Automatic Filling Group
Size	Piccolo
Thread Size	0.5 inch
Thread Type	NPT
Unit Count	1.0 count

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

$139.28

Duties & taxes included

In stock

Sold byAmazon USADelivered 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 USA.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

View all Trustpilot reviews