Description
Injection Valve for LMI Roytronic Chemical Metering Pumps | Adapts to 1/4", 3/8", 1/2" OD Tubing with Matching Connection Kit (Sold Separately)
Product Overview
The LMI 48728 Roytronic Injection Valve Assembly installs on the discharge side of an LMI chemical metering pump where chemicals enter the process line. It maintains a seal, prevents backflow, and delivers accurate chemical injection into the system. PVC body with a 1/2" MNPT threaded connection. Designed for sodium hypochlorite and other treatment chemicals.
This valve adapts to 1/4", 3/8", or 1/2" OD chemical tubing when paired with the matching LMI Tubing Connection Kit (sold separately). The tubing connection kit is not included with this valve.
What's Included
- 1 injector fitting (PVC body)
- 1 spring
- 1 check ball
- 1 seal ring
- 1 valve seat
- 1/2" NPT threaded connection standard
This valve does NOT include a ferrule set, coupling nut, or tubing connection kit.
Tubing Connection Kit Required (Sold Separately)
To connect this valve to your chemical tubing, you need the matching LMI Tubing Connection Kit for your tubing size:
- 1/4" OD tubing: LMI Tubing Connection Kit P/N 77382
- 3/8" OD tubing: LMI Tubing Connection Kit P/N 77383
- 1/2" OD tubing: LMI Tubing Connection Kit P/N 77384
Order LMI Tubing Connection Kits for 1/4", 3/8", 1/2" OD Chemical Tubing here.
Key Features
- PVC body with 1/2" MNPT threads: Fits most standard chemical injection ports on water treatment and dosing systems.
- Adapts to three tubing sizes: Works with 1/4", 3/8", and 1/2" OD chemical tubing when paired with the matching LMI tubing connection kit.
- Optimized for sodium hypochlorite: Designed for 12% sodium hypochlorite and similar treatment chemicals used in chlorination and disinfection.
- Leak-free seal with check ball and spring: The internal check ball and spring maintain a tight seal to prevent chemical backflow and ensure accurate dosing.
- Direct replacement for LMI Roytronic pumps: Fits LMI Roytronic series wet ends. Check the compatibility list below to confirm your pump model.
Specifications
| Product | LMI 48728 Roytronic Injection Valve Assembly |
|---|---|
| Brand | LMI (An Ingersoll Rand Business) |
| Part Number | 48728 |
| Type | Injection Valve Assembly |
| Body Material | PVC |
| Seals | Confirm with Steven: EPDM (current listing) or Polyprel (Cannon Water source) |
| Check Ball | Ceramic |
| Valve Seat | PTFE |
| Connection | 1/2" MNPT outside threads |
| Tubing Compatibility | 1/4", 3/8", 1/2" OD (with matching tubing connection kit, sold separately) |
| Chemical Compatibility | Sodium hypochlorite (12%), treatment chemicals |
| Weight | 0.2 lb (USABlueBook) / 1.0 lb (Cannon Water) |
| Tubing Kit Included | No. Purchase LMI Tubing Connection Kit separately. |
Applications
The LMI 48728 is installed on the discharge side of Roytronic metering pumps in chemical feed systems. Replace when the existing injection valve shows signs of wear, leaking, or inconsistent dosing.
- Municipal water treatment and chlorination
- Wastewater treatment plants
- Cooling tower chemical feed
- Industrial process water treatment
- Commercial sodium hypochlorite dosing
Compatible LMI Metering Pump Wet Ends
A20HI, A28HI, A30HI, A38HI, A40HI, A48HI, 318SI, 358SI, 368SI, 398SI, 410SI, 418SI, 450SI, 458SI, 460SI, 490SI, 498SI, 818SI, 838SI, 828SI, 848SI, 910HI, 910SI, 918HI, 918SI, 920HI, 920SI, 928HI, 928SI, 930HI, 930SI, 938HI, 938SI, 940SI, D10HI, D18HI, D50HI, D58HI, D60HI, D68HI, D90HI, D98HI.
This part may also fit other wet ends not listed. Confirm your pump model number before ordering.
Buy the LMI 48728 Injection Valve Assembly from Cleanflow Utility Supply Company
Cleanflow Utility Supply Company stocks the LMI 48728 Roytronic Injection Valve Assembly. Ships across Canada and the USA. Free shipping on orders over $199. Pair with the matching LMI Tubing Connection Kit for your tubing size.
Call 1-866-335-1078 (Canada) or 1-204-888-8469 (USA), or email info@cleanflow.ca for pricing, availability, and technical support.
Frequently Asked Questions
Does this valve come with a tubing connection kit?
No. The LMI 48728 injection valve assembly does not include ferrules, coupling nuts, or a tubing connection kit. Purchase the matching LMI Tubing Connection Kit separately: P/N 77382 (1/4" OD), P/N 77383 (3/8" OD), or P/N 77384 (1/2" OD).
What tubing sizes does this valve work with?
The valve adapts to 1/4", 3/8", and 1/2" OD chemical tubing when paired with the correct LMI tubing connection kit. The connection kit is sold separately.
Where does this valve install?
On the discharge side of an LMI chemical metering pump, where chemicals enter the process line. It threads into the injection port with a 1/2" MNPT connection.
Is this valve suitable for sodium hypochlorite?
Yes. The PVC body and internal components are designed for 12% sodium hypochlorite and similar water treatment chemicals.
How do I know if this valve fits my pump?
Check the compatible wet ends list above. If your pump's wet end code (found on the pump tag) is listed, this valve fits. If unsure, contact Cleanflow with your pump model number for confirmation.
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