EXW Singapore — collect or forward from our Singapore office.

3G Electric
SPENCE Standard Inverted-Bucket Steam Trap - Standard Inverted-Bucket Steam Traps
SPENCEStandard Inverted-Bucket Steam Traps

SPENCE Standard Inverted-Bucket Steam Trap

The SPENCE 81S-C4E9 is a standard inverted-bucket steam trap made of cast iron, configured for in-line horizontal installation. It features 1-inch FNPT connections, a maximum capacity of 1,000 lb/hr, a maximum…

SKU 3G-OTH-70469

Also listed as: 81SC4E9 · 81S C4E9

Brand
SPENCE
Item
Standard Inverted-Bucket Steam Trap
Part Number
81S-C4E9
Category
Standard Inverted-Bucket Steam Traps
Available to Order
Also known as:81S-C4E9SPENCE
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
EXW Singapore
Collect or forward from our office
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support

Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

SPENCE
Manufacturer Part Number
81S-C4E9
Type
1,000 lb/hr, Strainer Included
FNPT
1 in
Max.
30 psi
Configuration
In-line
Installation Orientation
Horizontal

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The SPENCE 81S-C4E9 is a standard inverted-bucket steam trap made of cast iron, configured for in-line horizontal installation. It features 1-inch FNPT connections, a maximum capacity of 1,000 lb/hr, a maximum pressure of 30 psi, and a maximum temperature of 450°F, and includes a strainer.

Frequently Asked Questions

What is the SPENCE 81S-C4E9 steam trap used for?

The SPENCE 81S-C4E9 is a standard inverted-bucket steam trap used to discharge condensate and non-condensable gases from steam lines while preventing steam loss. It is suitable for industrial applications requiring reliable condensate removal at pressures up to 30 psi and temperatures up to 450°F.

What are the specifications of the SPENCE 81S-C4E9 steam trap?

The SPENCE 81S-C4E9 is a cast iron inverted-bucket steam trap with 1-inch FNPT connections, in-line horizontal configuration, maximum capacity of 1,000 lb/hr, maximum pressure of 30 psi, and maximum temperature of 450°F. It includes an integral strainer for debris protection.

Where to buy the SPENCE 81S-C4E9 steam trap worldwide?

3G Electric supplies the SPENCE 81S-C4E9 steam trap to customers worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your location. Contact us for pricing and lead time on this cast iron inverted-bucket steam trap.

How to install the SPENCE 81S-C4E9 inverted-bucket steam trap?

Install the SPENCE 81S-C4E9 horizontally with the inlet and outlet aligned in-line. Ensure the trap is level and the strainer is accessible for cleaning. Follow standard steam trap installation practices: blow down the line before installation, and provide isolation valves for maintenance.

Used in

Common applications for SPENCE
Process heating — SPENCE reverse-acting temperature regulators (e.g., 2020TD-GQD) control steam flow to maintain set temperatures in heat exchangers and jacketed vessels.
Condensate removal — SPENCE steam trap repair kit for model 4NU80 restores internal components in steam traps used for condensate removal and energy management.
Storage tank heating — SPENCE bronze temperature regulators with 1/2 in to 2 in connections modulate steam to maintain fluid temperatures in storage tanks.
HVAC and district heating — SPENCE reverse-acting regulators open on temperature drop to provide fail-safe heating in steam-based heating systems.
Industrial steam distribution — SPENCE temperature regulators and steam traps are used in steam headers and branch lines to control flow and remove condensate.
Maintenance and repair — SPENCE repair kits and replacement parts support planned maintenance programs for steam traps and regulators in continuous process plants.
Not sure this is the right part? Photo-identify it→

SPENCE Products

3G Electric supplies SPENCE standard inverted-bucket steam traps. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

More from SPENCE

View all SPENCE parts →
Cast iron inverted-bucket steam trap for horizontal in-line installation. 1-1/2 inch FNPT connections, maximum capacity 9,800 lb/hr, maximum pressure 30 psi. Strainer not included. Used to automatically drain condensate from steam lines while preventing steam loss
SPENCE
Cast iron inverted-bucket steam trap for horizontal in-line installation. 1-1/2 inch FNPT connections, maximum capacity 9,800 lb/hr, maximum pressure 30 psi. Strainer not included. Used to automatically drain condensate from steam lines while preventing steam loss
Cast iron inverted-bucket steam trap for in-line horizontal installation. 2-inch FNPT connections, maximum capacity 10,000 lb/hr, maximum pressure 180 psi, maximum temperature 450°F. Strainer not included. Used to discharge condensate from steam lines while preventing steam loss
SPENCE
Cast iron inverted-bucket steam trap for in-line horizontal installation. 2-inch FNPT connections, maximum capacity 10,000 lb/hr, maximum pressure 180 psi, maximum temperature 450°F. Strainer not included. Used to discharge condensate from steam lines while preventing steam loss

Customer reviews

No reviews yet — be the first

Questions & answers

No questions yet — ask us the first