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Parker PSG-4S Sweat Connection Sight Glass - Sweat Connection Sight Glasses
ParkerSweat Connection Sight Glasses

Parker PSG-4S Sweat Connection Sight Glass

The PARKER PSG-4S is a sweat connection sight glass constructed from copper. This model has a length of 4 7/8 inches and a cut-out length of 3.87 inches, designed for visual flow indication in piping systems.

SKU 3G-OTH-71867

Also listed as: PSG4S · PSG 4S

Brand
Parker
Item
PSG-4S Sweat Connection Sight Glass
Category
Sweat Connection Sight Glasses
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

Parker
Manufacturer Part Number
PSG-4S
Material
Copper

Technical Documents

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Parker Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The PARKER PSG-4S is a sweat connection sight glass constructed from copper. This model has a length of 4 7/8 inches and a cut-out length of 3.87 inches, designed for visual flow indication in piping systems.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is the PARKER PSG-4S sight glass used for?

The PARKER PSG-4S sweat connection sight glass provides visual flow indication in copper or steel piping systems. It is commonly used in industrial fluid handling applications to confirm media presence, detect air pockets, or monitor flow clarity in lines up to 4 7/8 inches long.

What are the specifications of the PARKER PSG-4S?

The PARKER PSG-4S is a sweat connection sight glass made of copper. It has an overall length of 4 7/8 inches and a cut-out length of 3.87 inches. The manufacturer part number is PSG-4S. It is designed for sweat installation into copper or steel pipe systems.

Where to buy the PARKER PSG-4S worldwide?

3G Electric supplies the PARKER PSG-4S sight glass to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. Contact us for a quote and lead time on this copper sweat connection sight glass for industrial flow monitoring.

How to install a sweat connection sight glass like the PARKER PSG-4S?

Install the PARKER PSG-4S by soldering it into copper or steel pipe using standard sweat fitting techniques. Ensure the cut-out length of 3.87 inches is matched to your pipe opening. Clean and flux the joint, heat evenly, and apply solder for a leak-free seal.

Used in

Common applications for Parker
Injection molding machine proportional directional control — Parker solenoid coils and proportional valve cartridges for mold-closing and hydraulic actuation circuits
Construction equipment hydraulic steering and boom control — Parker directional control valves with solenoid actuation for excavator and loader hydraulic systems
Industrial press forming systems — Parker pressure-relief and proportional directional valves for tonnage control and cycle sequencing
Material-handling conveyor systems — Parker proportional control valves with solenoid pilot stages for smooth load acceleration and deceleration
Tire-building machinery — Parker solenoid-actuated directional cartridges for synchronized multi-axis hydraulic positioning
Forestry and mobile equipment — Parker valve spools and solenoid assemblies rated for harsh-environment hydraulic circuits and mobile-duty pressure cycling

Parker Products

3G Electric supplies Parker sweat connection sight glasses. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
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This MUELLER sight glass is made of copper and features sweat connections for installation in copper piping systems. It allows visual monitoring of fluid flow, enabling operators to detect blockages or confirm circulation. Suitable for HVAC, refrigeration, and process lines
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Copper sight glass for sweat (solder) installation into copper piping systems. Provides visual indication of fluid flow, color, and clarity without opening the line. Overall length 7 7/8 inches, cut-out length 5.2 inches. Suitable for HVAC, refrigeration, and industrial process applications
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Copper sight glass with sweat connections for permanent installation in copper piping systems. Overall length 7-7/8 inches, cut-out length 5.95 inches. Allows visual monitoring of fluid flow to detect blockages or confirm circulation in HVAC, refrigeration, and plumbing lines
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This MUELLER sight glass is constructed of brass and features sweat connections for permanent copper-tube installation. It provides visual confirmation of fluid flow, level, or condition in a pipeline. Commonly used in HVAC, refrigeration, and industrial process systems to monitor refrigerant or liquid flow without opening the line
This MUELLER sight glass is constructed of brass and features sweat connections for copper pipe installation. It allows visual inspection of fluid flow or level in piping systems without opening the line. Overall length is 5 3/4 inches with a 4.93-inch cut-out length. Suitable for use in HVAC, plumbing, and process lines
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This MUELLER sight glass is constructed of brass and features sweat connections for copper pipe installation. It allows visual inspection of fluid flow or level in piping systems without opening the line. Overall length is 5 3/4 inches with a 4.93-inch cut-out length. Suitable for use in HVAC, plumbing, and process lines

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The Parker PSG-2S is a steel sight glass with sweat connections, designed for visual flow indication in piping systems. It measures 4 5/8 inches overall length with a 4.19-inch cut-out length, allowing confirmation of media presence, clarity, or movement without disassembly. Suitable for use in industrial fluid handling applications where monitoring process lines is required
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The Parker PSG-2S is a steel sight glass with sweat connections, designed for visual flow indication in piping systems. It measures 4 5/8 inches overall length with a 4.19-inch cut-out length, allowing confirmation of media presence, clarity, or movement without disassembly. Suitable for use in industrial fluid handling applications where monitoring process lines is required
The PARKER PSG-3S is a steel sight glass with sweat connections for copper or steel piping. It has an overall length of 4 5/8 inches and a cut-out length of 4.12 inches. Used for visual monitoring of fluid flow, color, and clarity in industrial piping systems
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The PARKER PSG-3S is a steel sight glass with sweat connections for copper or steel piping. It has an overall length of 4 5/8 inches and a cut-out length of 4.12 inches. Used for visual monitoring of fluid flow, color, and clarity in industrial piping systems
The PARKER PSG-7S is a sweat connection sight glass constructed of steel. It has an overall length of 6 5/16 inches and a cut-out length of 4.73 inches. This component is used for visual flow monitoring in piping systems, allowing observation of fluid presence, clarity, and movement. Typical applications include HVAC, refrigeration, and fluid handling systems where copper or steel piping is employed
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The PARKER PSG-7S is a sweat connection sight glass constructed of steel. It has an overall length of 6 5/16 inches and a cut-out length of 4.73 inches. This component is used for visual flow monitoring in piping systems, allowing observation of fluid presence, clarity, and movement. Typical applications include HVAC, refrigeration, and fluid handling systems where copper or steel piping is employed
Steel sight glass with sweat connections for permanent brazed installation in copper or steel piping. Overall length 4-7/8 in, cut-out length 3.62 in. Provides visual monitoring of fluid flow, liquid level, or contamination in HVAC, refrigeration, and process lines
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Steel sight glass with sweat connections for permanent brazed installation in copper or steel piping. Overall length 4-7/8 in, cut-out length 3.62 in. Provides visual monitoring of fluid flow, liquid level, or contamination in HVAC, refrigeration, and process lines