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SPENCE Steam Trap: Cast Iron, 1 in FNPT, 1,000 lb/hr, 30 psi Max., 450°F Max. - Standard Inverted-Bucket Steam Traps
SPENCEStandard Inverted-Bucket Steam Traps

SPENCE Steam Trap: Cast Iron, 1 in FNPT, 1,000 lb/hr, 30 psi Max., 450°F Max.

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
Steam Trap: Cast Iron, 1 in FNPT, 1,000 lb/hr, 30 psi Max., 450°F Max.
Category
Standard Inverted-Bucket Steam Traps
Available to Order
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

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

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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
Steam condensate removal in industrial process heating — SPENCE inverted-bucket steam traps (e.g., 85-CPG9)
Pressure reduction for steam distribution in commercial buildings — SPENCE D50A pressure regulators
Modulating control of steam flow in heat exchangers — SPENCE pneumatic globe control valves (e.g., K1TC811-36RA)
Air venting from steam mains and headers — SPENCE NAV-213 air vents
Condensate drainage in low-pressure steam heating systems — SPENCE 81S-C1E9 steam traps with strainer

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.

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Cross-referenced by specification & description
Steam Trap: Cast Iron, 1 in FNPT, 950 lb/hr, 70 psi Max., 450°F Max., Strainer Included (MPN 81S-C7E9)
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Steam Trap: Cast Iron, 1 in FNPT, 950 lb/hr, 70 psi Max., 450°F Max., Strainer Included (MPN 81S-C7E9)
Steam Trap: Cast Iron, 1 in FNPT, 1,060 lb/hr, 15 psi Max., 450°F Max., Strainer Included (MPN 81S-C1E9)
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Steam Trap: Cast Iron, 1 in FNPT, 1,060 lb/hr, 15 psi Max., 450°F Max., Strainer Included (MPN 81S-C1E9)
Steam Trap: Cast Iron, 1 in FNPT, 950 lb/hr, 125 psi Max., 450°F Max., Strainer Included (MPN 81S-C9E9)
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Steam Trap: Cast Iron, 1 in FNPT, 950 lb/hr, 125 psi Max., 450°F Max., Strainer Included (MPN 81S-C9E9)
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Steam Trap: Cast Iron, 3/4 in FNPT, 680 lb/hr, 125 psi Max., 450°F Max., Strainer Included (MPN 80S-C9D9)
Steam Trap: Cast Iron, 1 1/2 in FNPT, 10,000 lb/hr, 15 psi Max., 450°F Max., Strainer Not Included (MPN 85-C1G9)
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Steam Trap: Cast Iron, 1 1/2 in FNPT, 10,000 lb/hr, 15 psi Max., 450°F Max., Strainer Not Included (MPN 85-C1G9)
Steam Trap: Cast Iron, 1/2 in FNPT, 680 lb/hr, 125 psi Max., 450°F Max., Strainer Included (MPN 80S-C9C9)
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Steam Trap: Cast Iron, 1/2 in FNPT, 680 lb/hr, 125 psi Max., 450°F Max., Strainer Included (MPN 80S-C9C9)

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