UNI Flange 1300

ParameterSpecification / Details
Product NameUNI Flange® Series 1300 Restraint Device
Material Options– Ductile Iron (typically ASTM A536 Grade 65‑45‑12)
– Structural Steel (ASTM A36) (depending on the style: e.g. “C” models for ductile iron pipe and “S” models for steel pipe OD)
Pipe Size Range– UNI Flange 1300‑S (for PVC with steel pipe OD): approximately 2″–12″
– UNI Flange 1300‑C (for PVC with ductile iron pipe OD): available in sizes from about 4″ up to larger sizes (some configurations extend to 14″–42″)
Key Features– Full, circumferential (360°) contact and support of the pipe wall
– Built‑in end restraint via serrated inner surfaces
– Allows for a degree of pipe deflection during installation
– Can be installed on site (even before pipe laying)
Installation & Fast‑Assembly– Installed using extra‑long T‑bolts and clamping hardware provided in the kit
– Designed for rapid on‑site installation without specialized fabrication (no welding, threading, or grooving required)
Torque SpecificationsMinimum recommended clamping bolt torques (for proper restraint):
• 2″–6″ sizes: ~100 ft‑lb
• 8″ sizes: ~150 ft‑lb
• 10″–12″ sizes: ~200 ft‑lb (ensure even “star‑pattern” tightening with a calibrated torque wrench)
Performance / Safety FactorRated to support the full working pressure of the PVC pipe with a minimum 2:1 safety factor (i.e. the restraint’s pressure rating equals the full rated pressure of the pipe under normal conditions)
Category:

Description

What is UNI Flange 1300?

The UNI Flange 1300 is a type of pipe restraint used in piping systems, especially for PVC pipes. It’s designed to provide a fast and economical way to secure connections without the need for traditional thrust blocks.

Key Features:

  • Versatile Application: Compatible with ductile iron and PVC pipes.
  • Adjustable & Secure Fit: Provides a flexible yet strong connection, allowing for easy alignment and installation.
  • Corrosion-Resistant Build: Made from durable materials with protective coatings to withstand harsh environments.
  • No Welding Required: Reduces installation time and labor costs while ensuring a leak-free seal.
  • Superior Pressure Handling: Designed to handle high-pressure systems effectively.

UNI Flange 1300 Dimensions

UNI Flange 300 Diagram

NOM. PIPE
SIZE
DUCTILE IRON PIPE
STYLE 1300-C
ABCRESTRAINT
BOLTS / RODS
CLAMPING BOLTSAPPROX.
WT.
LBS
PRESSURE
RATING
(PSI)
CLAMPING BOLT TORQUE
O.D.CATALOG NUMBERNO.SIZENO.SIZE
4"4.8UFR1300-C-41-1/8"9-1/8"6"23/4"X 7"25/8"x3-1/2"8.5250100 ft-lb.
6"6.9UFR1300-C-61-1/8"11-1/8"6"23/4"X 7"25/8"x3-1/2"10
8"9.05UFR1300-C-81-1/4"14-5/8"6"23/4"X 7"23/4"x4"15.5150 ft-lb
10"11.1UFR1300-C-101-3/8"16-5/8"6"43/4"X 7"27/8"x5"26.5200200 ft-lb.
12"13.2UFR1300-C-121-3/8"19-1/4"6"43/4"X 7"27/8"x5"28.5
14"15.3UFR1300-C-144"22-1/2"15"63/4"X 17"47/8"x7"72.5150
16"17.4UFR1300-C-164"24-9/16"15"63/4"X 17"47/8"x7"77100

Applications:

  • Water & wastewater pipelines
  • Industrial piping systems
  • Fire protection lines
  • Municipal infrastructure

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