Application Guide

FLEX KIT PART NUMBERS
IPS MANIFOLD SWT MANIFOLD MANUFACTURER MODEL NUMBER
4FK3-WIF 5FK3-WIF
Flex Complete Kit w/
3/4" Female Boiler Connections
Raypak Xpak
Xpak-120
Xpak-85
4FK4-WIF 5FK4-WIF
Flex Complete Kit w/
1" Female Boiler Connections
Bosch
GreenStar 57 ZBR16-3A
GreenStar 100 ZBR28-3A
GreenStar 131 ZBR35-3A
GreenStar 151 ZBR42-3A
GreenStar Combi 100 ZWB28-3A
GreenStar Combi 151 ZWB42-3A
New York Thermal NTI Trinity Tx Tx132C/151C
Sime Planet Dewy 60 BFR
4FK3-WIS 5FK3-WIS
Flex Complete Kit w/
3/4" SWT Boiler Connections
Baxi
Luna
HT 380
HT 1.33
Luna 3
Comfort 310
Comfort 1.31
Biasi
Riva Compact M130.30CR
Riva Combi M35.30CB
Riva Plus Combi M135.30CM
Riva Plus Compact M135.30CR
Crown Boiler
Maui MWC116E*L
Maui Combi MWC116E*T
Laars Mascot II LMH
Peerless Combi Combi 160
Pensotti Solenne
PCC 34
PCH 18
PCH 34B
PCH 50B
PCI 18/8
PCI 34/20
Sime
Format Zip 35-BF
Planet Dewy 30/50 BF
Slant Fin VSL VSL-160C
4FK4-TTS 5FK4-TTS
Flex Complete Kit w/
1" FIP Boiler Connections
Triangle Tube
Prestige Excellence
PTE 110
PTE 110 LP
Prestige Solo 110
ONE APPIAN WAY WORCESTER, MA 01610
P.O. BOX 59 WORCESTER, MA 01613
P: [phone] • F: [phone]
www.webstonevalves.com
© 2013 Webstone Company Inc. FORM: HCF-0413
This content has been provided for the express purpose of demonstrating a product’s function in a system and should not be used as a reference for designing or assembling any working
installation. The user is solely responsible for ensuring that all products are used and all systems are designed in accordance with all applicable federal, state and local codes.
Precision-Crafted
Closely Spaced Tees
Fully Insulated Body
• 1 1/4" run × 1" valve
brass manifold
• Available in SWT or IPS
• T- ow feature on
both main valves
• 2 Independent purge valves
• 1" MIP connections to
 ex pipe assemblies
DOUBLE BALL DRAIN MANIFOLD
Divert  uids from the
main  ow channel into
the drain from either
side of the ball
ADJUSTABLE
Webstone
Ball Drain
™