Hydronic Closely Spaced Tee | 8000S Series | Solder × Solder w/ Isolation Valve
Red-White Valve’s 8000S Hydronic Closely Spaced Tee combines hydraulic separation and isolation functionality in a single, compact fitting. Designed for high-performance primary/secondary loop systems, it uses a full-port chrome-plated brass ball valve between two precision-spaced tees to prevent crossflow and maintain hydraulic balance. Built from DZR lead-free brass and rated for 600 PSI WOG, it delivers unmatched performance for commercial and industrial hydronic systems.
Key Features & Benefits
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Dual Function Design — Combines hydraulic separation and isolation valve into one compact assembly, reducing installation points by up to 40%.
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High-Pressure Rated — 600 PSI WOG rating handles extreme pressures in industrial and commercial systems.
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DZR Lead-Free Brass Body — ASTM B30 C87850 construction provides dezincification resistance and compliance with NSF/ANSI 61 & 372.
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Full-Port Chrome-Plated Ball — Maximizes flow and minimizes pressure loss; blow-out-proof stem for safety and longevity.
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Solder End Connections — ASME B16.18 compliant solder joints ensure permanent, vibration-resistant sealing.
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PTFE & EPDM Sealing Components — Virgin PTFE seats and EPDM O-rings provide smooth operation across wide temperature ranges.
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Temperature Range — Operates from 15°F to 260°F (with approved antifreeze/anti-boil fluids).
Technical Specifications
| Parameter |
Details |
| Pressure Rating |
600 PSI WOG |
| Temperature Range |
15°F – 260°F (-9°C – 127°C) |
| Connections |
Solder × Solder (ASME B16.18 compliant) |
| Body Material |
DZR Lead-Free Brass ASTM B30 C87850 |
| Certifications |
NSF/ANSI 61 & 372 | AB1953 Lead-Free |
Dimension / Weight
| Part # |
Size |
φA [in] |
B [in] |
Branch [in] |
φC [in] |
D [in] |
E [in] |
F [in] |
G [in] |
H [in] |
I [in] |
L [in] |
φP [in] |
Weight [lb] |
| 8000S 100S075S |
1″ |
1.128–1.131 |
0.91 |
¾″ |
0.877–0.881 |
0.75 |
2.35 |
1.68 |
7.55 |
2.57 |
5.14 |
4.98 |
0.98 |
1.54 |
| 8000S 125S125S |
1¼″ |
1.377–1.381 |
0.98 |
1¼″ |
1.377–1.381 |
0.98 |
3.11 |
1.97 |
8.25 |
2.74 |
6.54 |
4.98 |
1.23 |
2.09 |
| 8000S 150S150S |
1½″ |
1.628–1.632 |
1.09 |
1½″ |
1.628–1.632 |
1.09 |
3.82 |
2.19 |
9.51 |
3.15 |
7.87 |
5.57 |
1.47 |
3.35 |
| 8000S 200S200S |
2″ |
2.128–2.132 |
1.34 |
2″ |
2.128–2.132 |
1.34 |
4.69 |
2.82 |
10.50 |
3.51 |
9.84 |
5.57 |
1.95 |
5.33 |
Material Construction
| # |
Part |
Material |
Specification |
| 1 |
Body |
DZR Lead-Free Brass |
ASTM B30 C87850 |
| 2 |
Ring Nut |
DZR Lead-Free Brass |
ASTM B927 C27453 |
| 3 |
Ball |
LF Brass / Chrome Plated |
ASTM B927 C27450 |
| 4 |
Seat |
PTFE |
– |
| 5 |
Stem |
DZR Brass |
ASTM B927 C27453 |
| 6 |
Packing Ring |
PTFE |
TF1502 |
| 7 |
Packing Nut |
Brass |
ASTM B124 C37700 |
| 8 |
Nut |
Steel / Zn Plated |
ASTM A36 |
| 9 |
Handle |
Steel / Dacromet® Plated |
ASTM A36 |
| 10–11 |
O-Ring |
EPDM Perox 70SH |
NSF Approved |
Warning (California Prop 65): This product can expose you to chemicals including lead, known to the State of California to cause cancer and reproductive harm. For more information, visit
www.P65Warnings.ca.gov.