EN118705 Elite Circulator Coupler (1/2" x 1/2")
Replacement for Bell & Gossett 118705 & More
The EN118705 Elite Circulator Coupler is a premium spring-type coupler designed for use with Bell & Gossett, Armstrong, and other popular circulators. Engineered for strength and vibration absorption, it ensures smooth, quiet, and efficient pump operation. Perfect for Series 100, HV, PR, 2" booster pumps, and several obsolete models, this aftermarket coupler delivers reliable long-term performance.
🔑 Key Features
✅ Direct replacement for Bell & Gossett 118705 and multiple equivalents
✅ Fits 1/2" x 1/2" shaft couplings
✅ Spring-type design absorbs vibration and reduces wear
✅ Ensures smooth, quiet circulator pump operation
✅ Compatible with Series 100, HV, PR, 2", and obsolete pump models
📊 Quick Compatibility Reference
| Brand | Series / Pump Type | Compatible Models |
|---|
| Bell & Gossett |
Series 100 |
106189, 106190, 106192, 106197 |
| Bell & Gossett |
Series HV |
102210, 102230, 102231 |
| Bell & Gossett |
2" Pumps |
102214, 102217, 102232, 102233 |
| Bell & Gossett |
Series PR |
102206, 102207, 102208 |
| Bell & Gossett |
Obsolete Models |
102033, 102034, 102036, 102308, 102309, 102311, 102X10–102X15, 102XX1–102XX9 |
| Armstrong |
Circulators |
806026-001 (cross reference) |
| Others |
Cross brands |
Hydrovalve RM-876, Sid Harvey 156 Series, Dayton/Grainger 4RD81, Westwood H24-10 / PD-40 |
🔁 Replaces OEM Part Numbers
-
Bell & Gossett: 118705, 189110, PZ-429, PZ-4291
-
Armstrong: 806026-001
-
Hydrovalve: RM-876
-
Sid Harvey: 156, 156B, 156C
-
Strainer Screen & Cylinder: SSC-779, 118705
-
Westwood: H24-10, PD-40
-
Dayton / Grainger: 4RD81
📊 Technical Specifications
| Specification | Details |
|---|
| Product Code |
EN118705 |
| Equivalent Parts |
B&G 118705, Armstrong 806026-001, others |
| Size |
1/2" x 1/2" |
| Type |
Spring-type circulator coupler |
| Function |
Connects motor to pump shaft, reduces vibration |
| Application |
Series 100, HV, PR, 2", and obsolete booster pumps |
⚠️ Common Symptoms of a Bad Coupler
✅ Loud rattling or vibration noise during operation
✅ Pump motor running but impeller not turning
✅ Visible wear, cracks, or broken spring on old coupler
✅ Reduced water circulation or flow issues
❓ Frequently Asked Questions (FAQ)
Q: How do I know this coupler fits my pump?
A: Check your pump’s series/model number or OEM part number. If it matches 118705 or equivalents, this coupler will fit.
Q: What size shafts does this coupler fit?
A: It’s designed for 1/2" x 1/2" shaft connections.
Q: Does this coupler help with pump noise?
A: Yes. The spring-type design absorbs vibration and reduces noise compared to worn couplers.
Q: Is this part OEM or aftermarket?
A: This is a high-quality aftermarket replacement engineered to OEM standards.
